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[ CAS No. 55151-91-2 ] {[proInfo.proName]}

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Chemical Structure| 55151-91-2
Chemical Structure| 55151-91-2
Structure of 55151-91-2 * Storage: {[proInfo.prStorage]}
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Product Details of [ 55151-91-2 ]

CAS No. :55151-91-2 MDL No. :MFCD13705349
Formula : C5H6N2O3 Boiling Point : -
Linear Structure Formula :- InChI Key :SPLXTCXODDVKKW-UHFFFAOYSA-N
M.W : 142.11 Pubchem ID :21313018
Synonyms :

Calculated chemistry of [ 55151-91-2 ]

Physicochemical Properties

Num. heavy atoms : 10
Num. arom. heavy atoms : 5
Fraction Csp3 : 0.4
Num. rotatable bonds : 2
Num. H-bond acceptors : 5.0
Num. H-bond donors : 1.0
Molar Refractivity : 30.81
TPSA : 76.22 Ų

Pharmacokinetics

GI absorption : High
BBB permeant : No
P-gp substrate : No
CYP1A2 inhibitor : No
CYP2C19 inhibitor : No
CYP2C9 inhibitor : No
CYP2D6 inhibitor : No
CYP3A4 inhibitor : No
Log Kp (skin permeation) : -7.14 cm/s

Lipophilicity

Log Po/w (iLOGP) : 0.93
Log Po/w (XLOGP3) : 0.04
Log Po/w (WLOGP) : 0.01
Log Po/w (MLOGP) : -1.09
Log Po/w (SILICOS-IT) : 0.51
Consensus Log Po/w : 0.08

Druglikeness

Lipinski : 0.0
Ghose : None
Veber : 0.0
Egan : 0.0
Muegge : 1.0
Bioavailability Score : 0.56

Water Solubility

Log S (ESOL) : -0.98
Solubility : 14.7 mg/ml ; 0.104 mol/l
Class : Very soluble
Log S (Ali) : -1.19
Solubility : 9.11 mg/ml ; 0.0641 mol/l
Class : Very soluble
Log S (SILICOS-IT) : -1.01
Solubility : 14.0 mg/ml ; 0.0984 mol/l
Class : Soluble

Medicinal Chemistry

PAINS : 0.0 alert
Brenk : 0.0 alert
Leadlikeness : 1.0
Synthetic accessibility : 2.56

Safety of [ 55151-91-2 ]

Signal Word:Warning Class:N/A
Precautionary Statements:P261-P264-P270-P271-P280-P301+P312-P302+P352-P304+P340-P330-P363-P501 UN#:N/A
Hazard Statements:H302-H312-H332 Packing Group:N/A
GHS Pictogram:

Application In Synthesis of [ 55151-91-2 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 55151-91-2 ]

[ 55151-91-2 ] Synthesis Path-Downstream   1~87

  • 1
  • [ 908094-01-9 ]
  • [ 55151-91-2 ]
  • (3-methyl-1,2,4-oxadiazol-5-yl)acetic acid methyl ester [ No CAS ]
YieldReaction ConditionsOperation in experiment
In diethyl ether; water 5 methyl 3-methyl-1,2,4-oxadiazol-5-yl-acetate EXAMPLE 5 methyl 3-methyl-1,2,4-oxadiazol-5-yl-acetate A solution of an excess of diazomethane in diethyl ether was added to a stirred, cold (about 2° C.) solution of 14 g of 3-methyl-1,2,4-oxadiazol-5-yl-acetic acid in 500 ml of diethyl ether. After the initially vigorous evolution of nitrogen was finished, the solution was concentrated on the steam bath to about 250 ml. The solution was washed three times with 100 ml of water and the wash waters were combined, adjusted to a pH of 9.0 and were extracted with diethyl ether to obtain the part of the product which dissolved in water during the washings. The combined ethereal extracts were filtered through a water repelling paper filter and then were evaporated in vacuo. After keeping the residue for 1 hour at 8 mm the residual oil weighed 14.8 g. The yellow oil was distilled at 0.4-0.5 mm and the collected fraction with a boiling point 70°-71° C. to obtain 12.3 g of methyl 3-methyl-1,2,4-oxadiazol-5-yl-acetate with a refractive index nD25 =1.4472. PMR (60 Mc, CDCl3, TMS as internal reference, δ-values in ppm): 2.38 (s, 3H), 3.76 (s, 3H), 3.99 (s, 2H). IR (NaCl windows, values in cm-1): 3020, 2985, 2870, 1760 and 1600.
  • 2
  • [ 55151-91-2 ]
  • [ 111-70-6 ]
  • n-heptyl 3-methyl-1,2,4-oxadiazol-5-yl-acetate [ No CAS ]
YieldReaction ConditionsOperation in experiment
With sodium hydrogencarbonate In water 36 n-heptyl 3-methyl-1,2,4-oxadiazol-5-yl-acetate EXAMPLE 36 n-heptyl 3-methyl-1,2,4-oxadiazol-5-yl-acetate Under anhydrous conditions, a stream of gaseous hydrochloric acid was passed through 25 ml of n-heptanol and as soon as a saturated solution was reached at room temperature, 5.7 g (0.04 mol) of 3-methyl-1,2,4-oxadiazol-5-yl-acetic acid were introduced. Introduction of a slow stream of hydrochloric acid was continued for two hours and the reaction mixture was then stirred for 60 hours at room temperature whereby conversion of the carboxylic acid was virtually completed. The reaction mixture was thoroughly mixed with 75 ml of cold water and the layers were separated. The organic layer was washed three times with 10 ml volumes of a saturated solution of sodium bicarbonate in water, and two times with 10 ml of cold water. All water-layers were combined and extracted twice with 20 ml volumes of ethyl acetate. The combined ethyl acetate extracts were once washed with 10 ml of iced water and the water-layers were discarded. The two organic layers were combined, dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. The residue was distilled and fractionated at reduced pressure to obtain 6.8 g of n-heptyl 3-methyl-1,2,4-oxadiazol-5-yl-acetate of about 95% molar purity (impurity mainly a small amount of n-heptanol with a b.p. of 108° C. at 0.25 mm Hg and a refractive index nD20 =1.450. IR (NaCl windows, values in cm-1): 2940, 2860, 1745, 1590, 1465, 1440 (sh), 1395, 1350, 1290, +-1250, 1200, 740. PMR (CDCl3, 60 Mc, TMS, δ-values in ppm): 0.88 (distorted triplet, 3H), from about 1.0 to 1.9 (broad absorption area, 10H), 2.38 (s, 3H), 3.93 (s, 2H), 4.17 (t, J=6.4 cps, 2H).
  • 3
  • [ 1072-67-9 ]
  • decarboxylate [ No CAS ]
  • [ 55151-91-2 ]
  • phosphorous trichloride (PCl3) [ No CAS ]
  • N-{(5-methyl)-isoxazol-3-yl}-3-methyl-1,2,4-oxadiazol-5-ylacetamide [ No CAS ]
YieldReaction ConditionsOperation in experiment
85.7% With phosphorus trichloride In 1,4-dioxane; water; toluene 20 N-{(5-methyl)-isoxazol-3-yl}-3-methyl-1,2,4-oxadiazol-5-ylacetamide EXAMPLE 20 N-{(5-methyl)-isoxazol-3-yl}-3-methyl-1,2,4-oxadiazol-5-ylacetamide The method employed below is in essence outlined in "Houben-Weyl, Methoden der Organischen Chemie", Band 11/2, p. 5 and 6. 7.8 g (0.055 mol) of 3-methyl-1,2,4-oxadiazol-5-yl-acetic acid were dissolved in 80 ml of a dry solvent mixture consisting of equal volume parts of dioxane and toluene. 6.9 g (0.07 mol) of 5-methyl-3-amino-isoxazole dissolved in 50 ml of the same mixture of dioxane and toluene and 4.2 g (0.031 mol) of phosphorous trichloride (PCl3) were successively added thereto. After the addition of PCl3, the mixture became lukewarm and a deposit of a heavy yellowish oil was noticed. Within a very short time, crystallization of the oil took place and the mixture was heated for 5 minutes at 90° C. on the steam-bath. Afterwards, the mixture was additionally stirred for 60 minutes at room temperature and then was evaporated in vacuo. The residue was suspended in 80 ml of water and the acidic suspension (pH of 1.5) was heated for 60 minutes on the steam-bath to decarboxylate remnants of the oxadiazolyl-acetic acid. The suspension was cooled and was continuously extracted with dichloromethane for 16 hours. The obtained extract was cooled to room temperature and the resulting mixture of crystals and solution were completely evaporated. The crystalline residue was dissolved in a slight excess of dichloromethane and the resulting solution was slowly cooled to room temperature, and then successively to 3° C., -15° C. and finally to -70° C. The crystals were quickly vacuum filtered, washed with dichloromethane at -70° C. and finally with n-heptane. After drying in vacuo, the N-{(5-methyl)-isoxazol-3-yl}-3-methyl-1,2,4-oxadiazol-5-yl-acetamide weighed 10.45 g (85.7% yield based on 3-methyl-1,2,4-oxadiazol-5-yl-acetic acid) and had a m.p. of 191°-193° C. IR: (KBr-disc, values in cm-1): 3240, 3290, 1715, 1650, 1605, 1585, 1500, 1450, 1365, 1280, 1220, 1045, 940, 900, 750 and 650. PMR: (about 4:1 mixture of CDCl3 and d6 -DMSO, 60 Mc,δ-values in ppm, TMS as reference): (s) and narrow d together at 2.4 (6H), 4.1 (s, 2H), 6.58 (narrow q, 1H), 10.5 (slightly broad s, 1H).
  • 4
  • [ 55151-91-2 ]
  • [ 15892-23-6 ]
  • sec.-butyl 3-methyl-1,2,4-oxadiazol-5-yl-acetate [ No CAS ]
YieldReaction ConditionsOperation in experiment
35% 26 Sec.-butyl 3-methyl-1,2,4-oxadiazol-5-yl-acetate EXAMPLE 26 Sec.-butyl 3-methyl-1,2,4-oxadiazol-5-yl-acetate Using the procedure of Example 17, 12 g of phosphorous oxychloride were slowly added to a mixture of 12 g of 3-methyl-1,2,4-oxadiazol-5-yl-acetic acid and 8.9 g of dry sec.-butanol and the rate of addition was adjusted to a reaction temperature of 65°+-5° C. The resulting reaction mixture was stirred for 90 minutes at 65° C., and then treated as in Example 17. The product was distilled at 68° C. and 1.5 mm Hg to obtain 6.1 g (35% yield) of sec.-butyl 3-methyl-1,2,4-oxadiazol-5-yl-acetate. The purity of the final product was about 95% (according to TLC and PMR spectrum) and it had a refractive index nD25 =1.438. IR: (NaCl windows, values in cm-1): 3000, 2960, 2900, 1745, 1600. PMR: (60 Mc, CDCl3, TMS, δ-values in ppm): 0.9 (triplet like, J=7.0 cps, 3H), 1.25 (d, J=6.3 cps, 3H), about 1.55 (quintet like, 2H), 2.40 (s, 3H), 3.93 (s, 2H), 4.93 (regular sextet, J=6.2 cps, 1H).
  • 5
  • fur-2-yl-carbonyl-hydrazide [ No CAS ]
  • [ 55151-91-2 ]
  • phosphorus trichloride [ No CAS ]
  • N-(fur-2-yl-carbonyl)-3-methyl-1,2,4-oxadiazol-5-yl-acethydrazide [ No CAS ]
YieldReaction ConditionsOperation in experiment
46% With pyridine In 1,4-dioxane; water; toluene 23 N'-(fur-2-yl-carbonyl)-3-methyl-1,2,4-oxadiazol-5-yl-acethydrazide EXAMPLE 23 N'-(fur-2-yl-carbonyl)-3-methyl-1,2,4-oxadiazol-5-yl-acethydrazide The employed method is an adaptation of the method outlined in "Houben-Weyl, Methoden der Organischen Chemie", Band 11/2, p. 5 and 6. Under anhydrous conditions and with powerful mechanical stirring, 5 g (0.063 mol) of pyridine and 6.3 g (0.05 mol) of fur-2-yl-carbonyl-hydrazide were added at room temperature successively to a solution of 6 g (0.042 mol) of 3-methyl-1,2,4-oxadiazol-5-yl-acetic acid in a mixture of 50 ml of dry dioxane and 50 ml of toluene. To the resulting clear solution was added all at once 3.4 g (0.025 mol) of phosphorous trichloride and a heavy, yellow oil appeared which solidified quickly. Subsequently, the reaction mixture was heated for 5 minutes at about 90° C. on the steam-bath followed by stirring at room temperature for 60 minutes. The reaction mixture was evaporated in vacuo and the residue was suspended in 75 ml of water. The acidic suspension at pH 2 was heated for 60 minutes on the steam-bath which resulted in a clear yellow solution. After cooling the solution to room temperature, crystallization of a yellowish solid took place and this product was isolated by vacuum filtration and was washed with ice-water. The product weighed 7.2 g and was recrystallized from acetone with step-wise cooling down to about -20° C. to obtain 5.1 g (about 46% yield) of a slight yellow crystalline solid of about 95% purity (according to TLC and PMR) of N-(fur-2-yl-carbonyl)-3-methyl-1,2,4-oxadiazol-5-yl-acethydrazide, m.p. of 169°-171° C. IR: (KBr-disc, values in cm-1): +-3180, 1700 and 1675, 1620, +-1590, +-1570, +-1510, 1480, 1435, 1205, 945 and 790. PMR: (d6 -DMSO, 60 Mc, δ-values in ppm, DSS as reference): 2.36 (s, 3H), 4.04 (s, 2H), 6.65 (q, J=3.6 and J'=1.7 cps, 1H), 7.25 (q, J=3.6 and J"=0.7 cps, 1H), 7.9 (q, J'=1.7 and J"=0.7 cps, 1H), 10.35 (s, about 1.8H).
  • 6
  • [ 55151-91-2 ]
  • phosphorus trichloride [ No CAS ]
  • 3-methyl-1,2,4-oxadiazol-5-yl-acetamide [ No CAS ]
YieldReaction ConditionsOperation in experiment
64.5% With ammonia In 1,4-dioxane; diethyl ether; dichloromethane; water; toluene 21 3-methyl-1,2,4-oxadiazol-5-yl-acetamide EXAMPLE 21 3-methyl-1,2,4-oxadiazol-5-yl-acetamide The employed method is an adaptation of the method outlined in "Houben-Weyl, Methoden der Organischen Chemie", Band 11/2, p. 5 and 6. 8 g (0.056 M) of 3-methyl-1,2,4-oxadiazol-5-yl-acetic acid were dissolved at room temperature in 150 ml of a dry solvent mixture consisting of equal volume parts of dioxane and toluene and at room temperature, 3.5 g of dry, gaseous ammonia were introduced into the solution which resulted in the precipitation of the ammonium salt of the oxadiazolyl-acetic acid in the form of a white thick slush. While gaseous ammonia was introduced slowly below the surface of the vigorously stirred mixture, a solution of 4 g (0.029 mol) of phosphorous trichloride in 50 ml of the same solvent mixture of dioxane and toluene was introduced over a period of 10 minutes. During the addition, the mixture became lukewarm and attained a yellowish color. Then, the reaction mixture was heated at about 90° C. on the steam-bath for 5 minutes and the reaction mixture was stirred for 60 minutes at room temperature and then completely evaporated in vacuo. The residue was dissolved in 75 ml of water, and the resulting acidic solution (pH 2.0) was heated for 60 minutes on the steam-bath. The solution was cooled to room temperature, was saturated with sodium chloride and then continuously extracted for 16 hours with dichloromethane. The obtained extract was completely evaporated resulting in a crystalline residue which resisted several recrystallization attempts from various solvents. Therefore, the residue was filtered through a short silica column with diethyl ether. Ether was removed and the residue was recrystallized from a 9:1 mixture of diethyl ether and dichloromethane employing step-wise cooling of the solution from room temperature down to -70° C. (crystals washed with very cold diethyl ether) to obtain 5.1 g (64.5% yield) of 3-methyl-1,2,4-oxadiazol-5-yl-acetamide with a m.p. of 77°-77.5° C. IR: (KBr-disc, values in cm-1): 3180, +-3240, 1685, +-1635, 1595, 1445 (s), 1425, 1400, 1360, 1315, 1270, 1260, 1180, 1060, 890, 730 and 685. PMR: (CDCl3 and a trace of d6 DMSO, 60 Mc, δ-values in ppm, TMS as reference): 2.40 (s, 3H), 3.88 (s, 2H), +-6.6 and +-7.2 (centres of 2 broad abs., about 2H).
  • 7
  • [ 10403-80-2 ]
  • [ 55151-91-2 ]
YieldReaction ConditionsOperation in experiment
With hydrogenchloride; n-butyllithium; N,N,N,N,-tetramethylethylenediamine; nitrogen In diethyl ether; hexane; chloroform; water; Petroleum ether 1 3-methyl-1,2,4-oxadiazol-5-yl-acetic acid EXAMPLE 1 3-methyl-1,2,4-oxadiazol-5-yl-acetic acid A solution of 4.0 g (40.8 mmol) of 3,5-dimethyl-1,2,4-oxadiazole and of 6.0 ml of N,N,N',N'-tetramethylethylenediamine (TMEDA) in 100 ml of dry toluene was prepared in a 250 ml three-necked glass vessel equipped with a thermometer, a gas inlet tube through which dry nitrogen was introduced continuously and a pressure equalized dropping funnel. The magnetically stirred solution was cooled to -75° C. with an acetone-carbon dioxide bath and by means of the dropping funnel, a solution of approximately 40 mmol of n-butyllithium in 20 ml of n-hexane was added slowly to keep the reaction mixture below -65° C. Afterwards the reaction mixture was stirred for another 60 minutes at -55° to -60° C. Subsequently, the reaction mixture was transferred with a bent ground glass tube to a second vessel containing powdered carbon dioxide covered with a layer of dry diethyl ether and after standing a few hours, the carbon dioxide had practically disappeared from the mixture. 100 ml of water were added, followed by addition of 1 N hydrochloric acid with stirring until a pH of 8 was attained. The layers were separated and the organic layer was discarded and the aqueous layer was shaken twice with 25 ml of diethyl ether. The pH of the aqueous layer was brought to 2.0 with 1 N hydrochloric acid and seven extractions with about 25 ml portions of ethyl acetate at pH 2.0 resulted in almost complete removal of the desired product from the aqueous layer. The extracts were combined, dried over anhydrous magnesium sulfate, and filtered and the filtrate was concentrated in vacuo to a small volume until a crystalline white precipitate appeared. Thin-layer chromatography showed that the supernatant liquid still contained a considerable amount of the desired product and no by-products and the solvent was then completely removed in vacuo. The practically colorless residue was dried to constant weight to obtain 4.2 g (72% yield) of the product with a purity of at least 96% estimated by TLC and PMR spectrum. Recrystallization of the product was effected by dissolution in a minimum volume of chloroform, followed by slow addition of petroleum ether (b.p. 80°-110° C.) until a turbidity appear to obtain 3.6 g of 3-methyl-1,2,4-oxadiazol-5-yl-acetic acid with a melting point of about 95° C. (slow decarboxylation sets in at about 90° C.). pKa -value (determined in water): 3.64 Analysis: C5 H6 N2 O3: Calculated: %C 42.26, %H 4.26, %N 19.71, %O 33.77. Found: %C 42.24, %H 4.28, %N 19.60, %O 33.88.
  • 8
  • [ 55151-91-2 ]
  • [ 865671-22-3 ]
  • 5-(6-bromo-2-chloro-8-fluoro-4-methylquinolin-3-yl)-3-methyl-1,2,4-oxadiazole [ No CAS ]
YieldReaction ConditionsOperation in experiment
With trichlorophosphate at 110℃; for 1h; 1.1; 33 Step 1: Synthesis of Compound Int-1-1c A mixture of aniline Int-1-1a (1.52 g, 6.5 mmol), oxadiazole acid Int-1- 1b (1.12 g, 7.9 mmol) and POCl3 (10 mL) was stirred at 110 °C for 1 h. After cooling to room temperature, excess POCl3 was removed under reduced pressure. To the residue, H2O was added at 0 °C, and the mixture was stirred at 0 °C for 10 min. The precipitated crude chloroquinoline Int-1-1c was filtered, washed with H2O and dried under reduced pressure. The crude product Int-1-1c was used for the next reaction without further purification.
  • 9
  • [ 55151-91-2 ]
  • C25H31F2N5O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 6 steps 1: trichlorophosphate / 1 h / 110 °C 2: trans-bis(triphenylphosphine)palladium dichloride / toluene / 80 °C 3: hydrogenchloride / water; 1,4-dioxane / 0.5 h / 20 °C 4: [RhCl2(p-cymene)]2; sodium formate; N-[(1S,2S)-2-amino-1,2-diphenylethyl]-4-methylbenzenesulfonamide / tetrahydrofuran; water / 2.5 h / 40 °C / Inert atmosphere 5: 4-(trimethylsilyl)morpholine; diethylamino-sulfur trifluoride / dichloromethane / -78 - 20 °C 6: N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide / 120 °C
  • 10
  • [ 55151-91-2 ]
  • C25H31F2N5O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 6 steps 1.1: trichlorophosphate / 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3.1: caesium carbonate; triphenylphosphine; palladium dichloride / tetrahydrofuran; water / 24 h / 85 °C 4.1: dimethylsulfide borane complex / tetrahydrofuran / 1 h / 0 - 20 °C 4.2: 2 h / 0 - 50 °C 5.1: diethylamino-sulfur trifluoride / dichloromethane / 2.5 h / 0 - 5 °C 5.2: 2 h / 45 °C 6.1: N-ethyl-N,N-diisopropylamine; sodium tris(acetoxy)borohydride; acetic acid / 1,2-dichloro-ethane / 20 °C
  • 11
  • [ 55151-91-2 ]
  • C24H27F4N5O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 5 steps 1.1: trichlorophosphate / 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 18 h / 120 °C 3.1: copper(l) iodide / N,N-dimethyl-formamide / 1 h / 80 °C 4.1: sulfuric acid / tetrahydrofuran; water / 1.5 h / 50 °C 5.1: N-ethyl-N,N-diisopropylamine / 1,2-dichloro-ethane / 0.17 h / 20 °C 5.2: 20 °C
  • 12
  • [ 55151-91-2 ]
  • C24H27F4N5O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1: trichlorophosphate / 1.5 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / 110 °C 3: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 4: sodium tris(acetoxy)borohydride; acetic acid / 1,2-dichloro-ethane / 18 h / 20 °C
  • 13
  • [ 55151-91-2 ]
  • C26H29F3N6O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 5 steps 1.1: trichlorophosphate / 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3.1: tetrakis(triphenylphosphine) palladium(0); zinc / tetrahydrofuran; N,N-dimethyl-formamide / 80 °C 4.1: sulfuric acid / tetrahydrofuran; water / 2 h / 50 °C 5.1: N-ethyl-N,N-diisopropylamine / 1,2-dichloro-ethane / 0.17 h / 20 °C 5.2: 20 °C
  • 14
  • [ 55151-91-2 ]
  • C26H32FN5O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 80 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 130 °C
  • 15
  • [ 55151-91-2 ]
  • C25H31F2N5O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 110 °C
  • 16
  • [ 55151-91-2 ]
  • C26H32FN5O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 80 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 130 °C
  • 17
  • [ 55151-91-2 ]
  • C23H25FN6O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 5 steps 1.1: trichlorophosphate / 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3.1: tetrakis(triphenylphosphine) palladium(0); zinc / tetrahydrofuran; N,N-dimethyl-formamide / 5 h / 80 °C 4.1: sulfuric acid / tetrahydrofuran; water / 4 h / 45 °C 5.1: N-ethyl-N,N-diisopropylamine / 1,2-dichloro-ethane / 0.17 h / 20 °C 5.2: 20 °C
  • 18
  • [ 55151-91-2 ]
  • C24H25N7O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 5 steps 1.1: trichlorophosphate / 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3.1: tetrakis(triphenylphosphine) palladium(0); zinc / tetrahydrofuran; N,N-dimethyl-formamide / 5 h / 80 °C 4.1: sulfuric acid / tetrahydrofuran; water / 4 h / 45 °C 5.1: N-ethyl-N,N-diisopropylamine / 1,2-dichloro-ethane / 0.17 h / 20 °C 5.2: 20 °C
  • 19
  • [ 55151-91-2 ]
  • 1-(6-ethyl-8-fluoro-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-N-(tetrahydro-2H-pyran-4-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 110 °C 3: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 4: sodium tris(acetoxy)borohydride; acetic acid / 1,2-dichloro-ethane / 20 °C
  • 20
  • [ 55151-91-2 ]
  • C25H31F2N5O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1: trichlorophosphate / 1 h / 80 °C 2: N-ethyl-N,N-diisopropylamine / isopropyl alcohol / 125 °C 3: sulfuric acid / water / 2 h / 45 °C 4: sodium tris(acetoxy)borohydride; acetic acid / 1,2-dichloro-ethane / 20 °C
  • 21
  • [ 55151-91-2 ]
  • C25H32FN5O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1: trichlorophosphate / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 110 °C 3: hydrogenchloride / water; acetone / 5 h / 20 °C 4: sodium tris(acetoxy)borohydride; acetic acid / 1,2-dichloro-ethane / 20 °C
  • 22
  • [ 55151-91-2 ]
  • C22H25ClFN5O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1: trichlorophosphate / 1.5 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / isopropyl alcohol / 110 °C 3: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 4: sodium tris(acetoxy)borohydride; acetic acid / 1,2-dichloro-ethane / 20 °C
  • 23
  • [ 55151-91-2 ]
  • C23H28FN5O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1.1: trichlorophosphate / 0.08 h / 50 °C 1.2: 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 0.75 h / 110 °C / Microwave irradiation 3.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 4.1: acetic acid / 1,2-dichloro-ethane / 0.5 h / 20 °C 4.2: 20 °C
Multi-step reaction with 5 steps 1.1: trichlorophosphate / 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3.1: tris-(dibenzylideneacetone)dipalladium(0); tert-butyl XPhos / N,N-dimethyl-formamide / 2 h / 100 °C / Inert atmosphere 4.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 5.1: acetic acid / 1,2-dichloro-ethane / 0.5 h / 20 °C 5.2: 20 °C
  • 24
  • [ 55151-91-2 ]
  • C27H34FN5O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 5 steps 1.1: trichlorophosphate / 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3.1: palladium diacetate; caesium carbonate; catacxium A / water; toluene / 100 °C 4.1: sulfuric acid / tetrahydrofuran; water / 4 h / 45 °C 5.1: N-ethyl-N,N-diisopropylamine / 1,2-dichloro-ethane / 0.17 h / 20 °C 5.2: 20 °C
  • 25
  • [ 55151-91-2 ]
  • (2R,4S)-1-(6-ethyl-8-fluoro-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-2-methyl-N-(tetrahydro-2H-pyran-4-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 110 °C 2: potassium fluoride / N,N-dimethyl-formamide / 18 h / 125 °C
  • 26
  • [ 55151-91-2 ]
  • (2S,4S)-1-(6-ethyl-8-fluoro-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-2-methyl-N-(tetrahydro-2H-pyran-4-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 110 °C 2: potassium fluoride / N,N-dimethyl-formamide / 18 h / 125 °C
  • 27
  • [ 55151-91-2 ]
  • C26H32FN5O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 5 steps 1.1: trichlorophosphate / 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3.1: palladium diacetate; caesium carbonate; catacxium A / water; toluene / 100 °C 4.1: sulfuric acid / tetrahydrofuran; water / 4 h / 45 °C 5.1: N-ethyl-N,N-diisopropylamine / 1,2-dichloro-ethane / 0.17 h / 20 °C 5.2: 20 °C
  • 28
  • [ 55151-91-2 ]
  • (2R,4R)-1-(6-chloro-8-fluoro-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-2-methyl-N-(tetrahydro-2H-pyran-4-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 80 °C 2: potassium fluoride / dimethyl sulfoxide / 14 h / 125 °C
  • 29
  • [ 55151-91-2 ]
  • (2R,4R)-1-(8-fluoro-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)-6-(trifluoromethoxy)quinolin-2-yl)-2-methyl-N-((S)-tetrahydrofuran-3-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h 2: N-ethyl-N,N-diisopropylamine; potassium fluoride / dimethyl sulfoxide / 18 h / 140 °C
  • 30
  • [ 55151-91-2 ]
  • 4,6-dimethyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)-2-((2R,4R)-2-methyl-4-((tetrahydro-2H-pyran-4-yl)amino)piperidin-1-yl)quinoline-8-carbonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 80 °C 2: potassium fluoride / dimethyl sulfoxide / 14 h / 125 °C
  • 31
  • [ 55151-91-2 ]
  • 1-(6-cyclobutyl-8-fluoro-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-N-(tetrahydro-2H-pyran-4-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 5 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3: palladium diacetate; caesium carbonate; catacxium A / water; toluene / 100 °C 4: sulfuric acid / tetrahydrofuran; water / 4 h / 45 °C 5: sodium tris(acetoxy)borohydride; acetic acid / 1,2-dichloro-ethane / 0.1 h / 25 °C
  • 32
  • [ 55151-91-2 ]
  • (2R,4R)-1-(6-cyclopropyl-8-fluoro-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-2-methyl-N-(tetrahydro-2H-pyran-4-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 80 °C 2: potassium fluoride / dimethyl sulfoxide / 18 h / 125 °C
  • 33
  • [ 55151-91-2 ]
  • (2R,4R)-1-(6-ethyl-8-fluoro-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-2-methyl-N-((S)-tetrahydrofuran-3-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 110 °C 2: potassium fluoride / N,N-dimethyl-formamide / 18 h / 125 °C
  • 34
  • [ 55151-91-2 ]
  • C27H34FN5O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 5 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3: palladium diacetate; caesium carbonate; catacxium A / water; toluene / 100 °C 4: sulfuric acid / tetrahydrofuran; water / 4 h / 45 °C 5: N-ethyl-N,N-diisopropylamine; sodium tris(acetoxy)borohydride; acetic acid / 1,2-dichloro-ethane / 0.1 h / 25 °C
  • 35
  • [ 55151-91-2 ]
  • (2R,4S)-1-(8-fluoro-6-methoxy-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-2-methyl-N-((S)-tetrahydrofuran-3-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 3 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine; potassium fluoride / dimethyl sulfoxide / 18 h / 125 °C 3: tris-(dibenzylideneacetone)dipalladium(0); tert-butyl XPhos / 1,4-dioxane / 2 h / 125 °C
  • 36
  • [ 55151-91-2 ]
  • (2S,4S)-1-(8-fluoro-6-methoxy-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-2-methyl-N-((S)-tetrahydrofuran-3-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 3 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine; potassium fluoride / dimethyl sulfoxide / 18 h / 125 °C 3: tris-(dibenzylideneacetone)dipalladium(0); tert-butyl XPhos / 1,4-dioxane / 2 h / 125 °C
  • 37
  • [ 55151-91-2 ]
  • (2R,4R)-1-(8-fluoro-6-(methoxy-d3)-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-2-methyl-N-((S)-tetrahydrofuran-3-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 3 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine; potassium fluoride / dimethyl sulfoxide / 18 h / 125 °C 3: tris-(dibenzylideneacetone)dipalladium(0); tert-butyl XPhos / 1,4-dioxane / 18 h / 125 °C
  • 38
  • [ 55151-91-2 ]
  • (2R,4R)-1-(8-fluoro-6-isopropyl-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-2-methyl-N-((S)-tetrahydrofuran-3-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 3 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine; potassium fluoride / dimethyl sulfoxide / 18 h / 125 °C 3: palladium diacetate; tri tert-butylphosphoniumtetrafluoroborate; zinc dibromide / tetrahydrofuran / 2 h / 20 °C
  • 39
  • [ 55151-91-2 ]
  • 4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)-2-((2R,4R)-2-methyl-4-(((R)-tetrahydrofuran-3-yl)amino)piperidin-1-yl)quinoline-6,8-dicarbonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 3 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine; potassium fluoride / dimethyl sulfoxide / 18 h / 125 °C 3: tetrakis(triphenylphosphine) palladium(0); zinc / tetrahydrofuran; N,N-dimethyl-formamide / 18 h / 80 °C
  • 40
  • [ 55151-91-2 ]
  • 6-ethyl-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)-2-((2R,4R)-2-methyl-4-(((R)-tetrahydrofuran-3-yl)amino)piperidin-1-yl)quinoline-8-carbonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine; potassium fluoride / dimethyl sulfoxide / 18 h / 125 °C 3: tetrakis(triphenylphosphine) palladium(0); zinc / tetrahydrofuran; N,N-dimethyl-formamide / 18 h / 80 °C 4: palladium diacetate; potassium phosphate; tricyclohexylphosphine / water; toluene / 18 h / 100 °C
  • 41
  • [ 55151-91-2 ]
  • 6-ethyl-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)-2-((2R,4R)-2-methyl-4-(((S)-tetrahydrofuran-3-yl)amino)piperidin-1-yl)quinoline-8-carbonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 3 steps 1: trichlorophosphate / 1 h / 100 °C 2: N-ethyl-N,N-diisopropylamine; potassium fluoride / dimethyl sulfoxide / 18 h / 125 °C 3: tetrakis(triphenylphosphine) palladium(0); zinc / N,N-dimethyl-formamide / 18 h / 80 °C
  • 42
  • [ 55151-91-2 ]
  • 6-ethyl-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)-2-((2R,4R)-2-methyl-4-((tetrahydro-2H-pyran-4-yl)amino)piperidin-1-yl)quinoline-8-carbonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 3 steps 1: trichlorophosphate / 1 h / 100 °C 2: N-ethyl-N,N-diisopropylamine; potassium fluoride / dimethyl sulfoxide / 18 h / 125 °C 3: tetrakis(triphenylphosphine) palladium(0); zinc / N,N-dimethyl-formamide / 18 h / 80 °C
  • 43
  • [ 55151-91-2 ]
  • (2R,4R)-1-(8-fluoro-4,6-dimethyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-2-methyl-N-(tetrahydro-2H-pyran-4-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine; potassium fluoride / N,N-dimethyl-formamide / 18 h / 125 °C
  • 44
  • [ 55151-91-2 ]
  • (2R)-1-(8-fluoro-4,6-dimethyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-2-methyl-N-((S)-tetrahydrofuran-3-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine; potassium fluoride / N,N-dimethyl-formamide / 18 h / 125 °C
  • 45
  • [ 55151-91-2 ]
  • (2R)-1-(8-fluoro-4,6-dimethyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-2-methyl-N-((R)-tetrahydrofuran-3-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine; potassium fluoride / N,N-dimethyl-formamide / 18 h / 125 °C
  • 46
  • [ 55151-91-2 ]
  • 1-(6-chloro-8-fluoro-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-N-(tetrahydro-2H-pyran-4-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1: trichlorophosphate / 1 h / 80 °C 2: N-ethyl-N,N-diisopropylamine / isopropyl alcohol / 120 °C 3: sulfuric acid / tetrahydrofuran; water / 2 h / 40 °C 4: N-ethyl-N,N-diisopropylamine; sodium tris(acetoxy)borohydride; acetic acid / 1,2-dichloro-ethane / 20 °C
  • 47
  • [ 55151-91-2 ]
  • 1-(8-fluoro-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)-6-(trifluoromethoxy)quinolin-2-yl)-N-(tetrahydro-2H-pyran-4-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1.1: trichlorophosphate / 1 h 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3.1: sulfuric acid / tetrahydrofuran; water / 2 h / 50 °C 4.1: N-ethyl-N,N-diisopropylamine / 1,2-dichloro-ethane / 0.17 h / 20 °C 4.2: 20 °C
  • 48
  • [ 55151-91-2 ]
  • 4,6-dimethyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)-2-((2R,4R)-2-methyl-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)piperidin-1-yl)quinoline-8-carbonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1: trichlorophosphate / 1 h / 80 °C 2: potassium fluoride / dimethyl sulfoxide / 125 °C 3: trifluoroacetic acid / dichloromethane / 1 h / 20 °C 4: sodium tris(acetoxy)borohydride; acetic acid / 1,2-dichloro-ethane / 20 °C
  • 49
  • [ 55151-91-2 ]
  • 4,6-dimethyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)-2-((2R,4R)-2-methyl-4-((((R)-tetrahydrofuran-2-yl)methyl)amino)piperidin-1-yl)quinoline-8-carbonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1: trichlorophosphate / 1 h / 80 °C 2: potassium fluoride / dimethyl sulfoxide / 125 °C 3: trifluoroacetic acid / dichloromethane / 1 h / 20 °C 4: N-ethyl-N,N-diisopropylamine / acetonitrile / 80 °C
  • 50
  • [ 55151-91-2 ]
  • 2-((3S,4R)-3-fluoro-4-((tetrahydro-2H-pyran-4-yl)amino)piperidin-1-yl)-4,6-dimethyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinoline-8-carbonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 80 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 125 °C
  • 51
  • [ 55151-91-2 ]
  • (3S,4R)-1-(6-ethyl-8-fluoro-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-3-methyl-N-(tetrahydro-2H-pyran-4-yl)piperidin-4-amine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / isopropyl alcohol / 125 °C
  • 52
  • [ 55151-91-2 ]
  • 8-(6-bromo-8-fluoro-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-1,4-dioxa-8-azaspiro[4.5]decane [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C
  • 53
  • [ 55151-91-2 ]
  • C23H27FN4O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 3 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3: palladium diacetate; tri tert-butylphosphoniumtetrafluoroborate; zinc dibromide / tetrahydrofuran / 20 °C
  • 54
  • [ 55151-91-2 ]
  • C21H23FN4O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3: palladium diacetate; tri tert-butylphosphoniumtetrafluoroborate; zinc dibromide / tetrahydrofuran / 20 °C 4: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C
  • 55
  • [ 55151-91-2 ]
  • C24H27FN4O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 3 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3: palladium diacetate; caesium carbonate; catacxium A / water; toluene / 100 °C
  • 56
  • [ 55151-91-2 ]
  • 1-(6-cyclobutyl-8-fluoro-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)piperidin-4-one [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3: palladium diacetate; caesium carbonate; catacxium A / water; toluene / 100 °C 4: sulfuric acid / tetrahydrofuran; water / 4 h / 45 °C
  • 57
  • [ 55151-91-2 ]
  • C26H34FN5O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 5 steps 1.1: trichlorophosphate / 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3.1: palladium diacetate; tri tert-butylphosphoniumtetrafluoroborate; zinc dibromide / tetrahydrofuran / 20 °C 4.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 5.1: N-ethyl-N,N-diisopropylamine / 1,2-dichloro-ethane / 0.17 h / 20 °C 5.2: 20 °C
  • 58
  • [ 55151-91-2 ]
  • 1-(6-bromo-8-fluoro-4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)piperidin-4-one [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 3 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3: sulfuric acid / tetrahydrofuran; water / 3 h / 45 °C
  • 59
  • [ 55151-91-2 ]
  • 8-(8-fluoro-6-methoxy-4-methyl-3-(3-methyl-1.2.4-oxadiazol-5-yl)quinolin-2-yl)-1,4-dioxa-8-azaspiro[4.5]decane [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1.1: trichlorophosphate / 0.08 h / 50 °C 1.2: 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 0.75 h / 110 °C / Microwave irradiation
Multi-step reaction with 3 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3: tris-(dibenzylideneacetone)dipalladium(0); tert-butyl XPhos / N,N-dimethyl-formamide / 2 h / 100 °C / Inert atmosphere
  • 60
  • [ 55151-91-2 ]
  • C19H19FN4O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 3 steps 1.1: trichlorophosphate / 0.08 h / 50 °C 1.2: 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 0.75 h / 110 °C / Microwave irradiation 3.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C
Multi-step reaction with 4 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3: tris-(dibenzylideneacetone)dipalladium(0); tert-butyl XPhos / N,N-dimethyl-formamide / 2 h / 100 °C / Inert atmosphere 4: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C
  • 61
  • [ 55151-91-2 ]
  • C24H30FN5O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1.1: trichlorophosphate / 0.08 h / 50 °C 1.2: 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 0.75 h / 110 °C / Microwave irradiation 3.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 4.1: N-ethyl-N,N-diisopropylamine; acetic acid / 1,2-dichloro-ethane / 0.25 h / 20 °C 4.2: 5 h / 20 °C
Multi-step reaction with 5 steps 1.1: trichlorophosphate / 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3.1: tris-(dibenzylideneacetone)dipalladium(0); tert-butyl XPhos / N,N-dimethyl-formamide / 2 h / 100 °C / Inert atmosphere 4.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 5.1: N-ethyl-N,N-diisopropylamine; acetic acid / 1,2-dichloro-ethane / 0.25 h / 20 °C 5.2: 5 h / 20 °C
  • 62
  • [ 55151-91-2 ]
  • C23H27FN4O4 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 3 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3: caesium carbonate; bis(η3-allyl-μ-chloropalladium(II)); di-tert-butyl (2’,4’,6’-triisopropyl-3,6-dimethoxy-[1,1‘-biphenyl]-2-yl)phosphine / toluene / 90 °C / Inert atmosphere
  • 63
  • [ 55151-91-2 ]
  • C21H23FN4O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3: caesium carbonate; bis(η3-allyl-μ-chloropalladium(II)); di-tert-butyl (2’,4’,6’-triisopropyl-3,6-dimethoxy-[1,1‘-biphenyl]-2-yl)phosphine / toluene / 90 °C / Inert atmosphere 4: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C
  • 64
  • [ 55151-91-2 ]
  • C23H28FN5O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1.1: trichlorophosphate / 0.08 h / 50 °C 1.2: 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 0.75 h / 110 °C / Microwave irradiation 3.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 4.1: acetic acid / 1,2-dichloro-ethane / 0.25 h / 20 °C 4.2: 5 h / 20 °C
Multi-step reaction with 5 steps 1.1: trichlorophosphate / 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3.1: tris-(dibenzylideneacetone)dipalladium(0); tert-butyl XPhos / N,N-dimethyl-formamide / 2 h / 100 °C / Inert atmosphere 4.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 5.1: acetic acid / 1,2-dichloro-ethane / 0.25 h / 20 °C 5.2: 5 h / 20 °C
  • 65
  • [ 55151-91-2 ]
  • C22H26FN5O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1.1: trichlorophosphate / 0.08 h / 50 °C 1.2: 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 0.75 h / 110 °C / Microwave irradiation 3.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 4.1: acetic acid / 1,2-dichloro-ethane / 0.25 h / 20 °C 4.2: 5 h / 20 °C
Multi-step reaction with 5 steps 1.1: trichlorophosphate / 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3.1: tris-(dibenzylideneacetone)dipalladium(0); tert-butyl XPhos / N,N-dimethyl-formamide / 2 h / 100 °C / Inert atmosphere 4.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 5.1: acetic acid / 1,2-dichloro-ethane / 0.25 h / 20 °C 5.2: 5 h / 20 °C
  • 66
  • [ 55151-91-2 ]
  • C24H30FN5O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1.1: trichlorophosphate / 0.08 h / 50 °C 1.2: 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 0.75 h / 110 °C / Microwave irradiation 3.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 4.1: acetic acid / 1,2-dichloro-ethane / 0.25 h / 20 °C 4.2: 5 h / 20 °C
Multi-step reaction with 5 steps 1.1: trichlorophosphate / 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3.1: tris-(dibenzylideneacetone)dipalladium(0); tert-butyl XPhos / N,N-dimethyl-formamide / 2 h / 100 °C / Inert atmosphere 4.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 5.1: acetic acid / 1,2-dichloro-ethane / 0.25 h / 20 °C 5.2: 5 h / 20 °C
  • 67
  • [ 55151-91-2 ]
  • C24H30FN5O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1.1: trichlorophosphate / 0.08 h / 50 °C 1.2: 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 0.75 h / 110 °C / Microwave irradiation 3.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 4.1: N-ethyl-N,N-diisopropylamine; acetic acid / 1,2-dichloro-ethane / 0.25 h / 20 °C 4.2: 5 h / 20 °C
Multi-step reaction with 5 steps 1.1: trichlorophosphate / 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3.1: tris-(dibenzylideneacetone)dipalladium(0); tert-butyl XPhos / N,N-dimethyl-formamide / 2 h / 100 °C / Inert atmosphere 4.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 5.1: N-ethyl-N,N-diisopropylamine; acetic acid / 1,2-dichloro-ethane / 0.25 h / 20 °C 5.2: 5 h / 20 °C
  • 68
  • [ 55151-91-2 ]
  • C23H28FN5O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1.1: trichlorophosphate / 0.08 h / 50 °C 1.2: 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 0.75 h / 110 °C / Microwave irradiation 3.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 4.1: acetic acid / 1,2-dichloro-ethane / 0.25 h / 20 °C 4.2: 5 h / 20 °C
Multi-step reaction with 5 steps 1.1: trichlorophosphate / 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3.1: tris-(dibenzylideneacetone)dipalladium(0); tert-butyl XPhos / N,N-dimethyl-formamide / 2 h / 100 °C / Inert atmosphere 4.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 5.1: acetic acid / 1,2-dichloro-ethane / 0.25 h / 20 °C 5.2: 5 h / 20 °C
  • 69
  • [ 55151-91-2 ]
  • C19H18BrIN4O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C
  • 70
  • [ 55151-91-2 ]
  • 6-bromo-3-(3-methyl-1,2,4-oxadiazol-5-yl)-2-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)quinoline-8-carbonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 3 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3: tetrakis(triphenylphosphine) palladium(0); zinc / tetrahydrofuran; N,N-dimethyl-formamide / 80 °C
  • 71
  • [ 55151-91-2 ]
  • C22H23N5O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3: tetrakis(triphenylphosphine) palladium(0); zinc / tetrahydrofuran; N,N-dimethyl-formamide / 80 °C 4: tetrakis(triphenylphosphine) palladium(0); potassium carbonate / tetrahydrofuran; N,N-dimethyl-formamide / 70 °C
  • 72
  • [ 55151-91-2 ]
  • C20H19N5O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 5 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3: tetrakis(triphenylphosphine) palladium(0); zinc / tetrahydrofuran; N,N-dimethyl-formamide / 80 °C 4: tetrakis(triphenylphosphine) palladium(0); potassium carbonate / tetrahydrofuran; N,N-dimethyl-formamide / 70 °C 5: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C
  • 73
  • [ 55151-91-2 ]
  • C20H20BrIN4O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 18 h / 120 °C
  • 74
  • [ 55151-91-2 ]
  • C23H28FN5O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 4 steps 1.1: trichlorophosphate / 0.08 h / 50 °C 1.2: 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 0.75 h / 110 °C / Microwave irradiation 3.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 4.1: acetic acid / 1,2-dichloro-ethane / 0.25 h / 20 °C 4.2: 5 h / 20 °C
Multi-step reaction with 5 steps 1.1: trichlorophosphate / 1 h / 110 °C 2.1: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3.1: tris-(dibenzylideneacetone)dipalladium(0); tert-butyl XPhos / N,N-dimethyl-formamide / 2 h / 100 °C / Inert atmosphere 4.1: sulfuric acid / tetrahydrofuran; water / 2 h / 45 °C 5.1: acetic acid / 1,2-dichloro-ethane / 0.25 h / 20 °C 5.2: 5 h / 20 °C
  • 75
  • [ 55151-91-2 ]
  • C21H20BrN5O3 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 3 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 18 h / 120 °C 3: tetrakis(triphenylphosphine) palladium(0); zinc / tetrahydrofuran; N,N-dimethyl-formamide / 18 h / 80 °C
  • 76
  • [ 55151-91-2 ]
  • 8-(8-fluoro-4,6-dimethyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)quinolin-2-yl)-1,4-dioxa-8-azaspiro[4.5]decane [ No CAS ]
YieldReaction ConditionsOperation in experiment
Multi-step reaction with 2 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C
Multi-step reaction with 3 steps 1: trichlorophosphate / 1 h / 110 °C 2: N-ethyl-N,N-diisopropylamine / ethanol / 120 °C 3: trans-bis(triphenylphosphine)palladium dichloride / 1,4-dioxane; hexane / 1 h / 60 °C
  • 77
  • [ 55151-91-2 ]
  • C11H12FNO [ No CAS ]
  • C16H13ClFN3O [ No CAS ]
YieldReaction ConditionsOperation in experiment
With trichlorophosphate at 80℃; for 1h; 11 Synthesis of 42 mixture of Int-11-40 (1.0 equiv.) and Int-11-41 (1.0 equiv.) in POCl3 was heated at 80 °C for 1h. The excess POCl3 was removed under reduced pressure. The residue was quenched with ice and the mixture was stirred for 15 min. The pale brown product was collected by filtration and used in the next step without further purificaotion (53-55% yield). LCMS: (M+1) m/z = 318.
  • 78
  • [ 55151-91-2 ]
  • 1-(2-amino-5-methoxy-3-fluorophenyl)ethanone [ No CAS ]
  • 5-(2-chloro-8-fluoro-6-methoxy-4-methylquinolin-3-yl)-3-methyl-1,2,4-oxadiazole [ No CAS ]
YieldReaction ConditionsOperation in experiment
45% Stage #1: 2-(3-methyl-1,2,4-oxadiazol-5-yl)acetic acid With trichlorophosphate at 50℃; for 0.0833333h; Stage #2: 1-(2-amino-5-methoxy-3-fluorophenyl)ethanone at 110℃; for 1h; 36 Synthesis of Int-36-14h A solution of 2-(3-methyl-1,2,4-oxadiazol-5-yl)acetic acid Int-33-14g (72 mg, 0.50 mmol) in POCl3 (1.5 mL) was stirred at 50 °C for 5 min before ketone Int-36-7 (92 mg, 0.50 mmol) was added. The mixture was heated to 110 °C for 1h. The excess POCl3 was removed under vacuum. To the residue was added sat. aq. solution of NaHCO3, and the product was extracted with EtOAc. The combined organic layers were dried over Na2SO4 and concentrated to dryness. The crude product was purified by column chromatography (hexanes/EtOAc) to give 2-chloroquinoline Int-36-14h as a yellow solid (69 mg, 45% yield). LCMS: (M+1) m/z = 307, 309.
  • 79
  • [ 55151-91-2 ]
  • C7H5BrINO [ No CAS ]
  • C12H6BrClIN3O [ No CAS ]
YieldReaction ConditionsOperation in experiment
With trichlorophosphate at 110℃; for 1h; 90 Synthesis of Int-90-14 A mixture of aldehyde Int-90-11 (4.50 g, 13.8 mmol), oxadiazole acid Int-90-12 (2.36 g, 16.6 mmol) and POCl3 (14 mL) was stirred at 110 °C for 1 h. After cooling to room temperature, excess POCl3 was removed under reduced pressure. To this residue, H2O was added at 0 °C. The mixture was stirred at 0 °C for 10 min. The crude chloride Int-90-13 was filtered, washed with H2O and dried under reduced pressure. To a suspension of Int-90-13 in EtOH (70 mL) were added 1,4-dioxa-8- azaspiro[4,5]decane (3.5 mL, 27.6 mmol) and DIPEA (4.8 mL, 27.6 mmol) at room temperature. The mixture was then heated at 120 °C overnight. After cooling to room temperature, the mixture was concentrated and purified by column chromatography (hexanes/EtOAc gradient) to give quinoline Int-90-14 as yellow oil (2.61 g, 34% yield over two steps).
  • 80
  • [ 55151-91-2 ]
  • 2-amino-5-bromo-3-iodoacetophenone [ No CAS ]
  • C13H8BrClIN3O [ No CAS ]
YieldReaction ConditionsOperation in experiment
With trichlorophosphate at 110℃; for 1h; 91 Synthesis of Int-91-21 A mixture of ketone Int-91-19 (5.02 g, 14.8 mmol), oxadiazole acid Int- 91-12 (2.52 g, 17.7 mmol) and POCl3 (15 mL) was stirred at 110 °C for 1 h. After cooling to room temperature, excess POCl3 was removed under reduced pressure. To this residue, H2O was added at 0 °C. The mixture was stirred at 0 °C for 10 min. The crude chloride Int-91-20 was filtered, washed with H2O and dried under reduced pressure. To a suspension of Int-91-20 in EtOH (74 mL) were added 1,4-dioxa-8- azaspiro[4,5]decane (3.8 mL, 29.6 mmol) and DIPEA (5.2 mL, 29.6 mmol) at room temperature. The mixture was then heated at 120 °C overnight. After cooling to room temperature, the mixture was concentrated and purified by column chromatography (hexanes/EtOAc gradient) to give quinoline Int-91-21 as yellow oil (2.54 g, 30% yield over two steps).
  • 81
  • [ 55151-91-2 ]
  • [ 935292-91-4 ]
  • C13H8ClFIN3O [ No CAS ]
YieldReaction ConditionsOperation in experiment
With trichlorophosphate at 110℃; for 1h; 103 Synthesis of Int-103-16 A mixture of Int-103-15 (2.20 g, 7.9 mmol), oxadiazole acid (1.34 g, 9.5 mmol) and POCl3 (10 mL) was stirred at 110 °C for 1 h. After cooling to room temperature, excess POCl3 was removed in vacuo. The residue was partitioned between H2O and CH2Cl2. The organic layer was separated, washed with sat. aq. NaHCO3, dried over Na2SO4 and concentrated. Residue Int-103-16 was used for the next reaction without further purification.
  • 82
  • [ 55151-91-2 ]
  • C9H7F4NO [ No CAS ]
  • C14H8ClF4N3O [ No CAS ]
YieldReaction ConditionsOperation in experiment
With trichlorophosphate at 110℃; for 1.5h; 108 Synthesis of Int-108-33 and Int-108-34 A mixture of aldehyde Int-108-32 (1.0 equiv.), acid Int-108-9 (1.0 equiv.) and POCl3 was stirred at 110 °C for 1.5 h. The excess POCl3 was removed under reduced pressure. The residue was resuspended in a sat. aq. NaHCO3 solution and extracted with EtOAc (2X). The combined organic layers were dried over Na2SO4 and concentrated to dryness. The crude product was purified by column chromatography (Hexanes/EtOAc) to yield quinoline Int-108-34 as a white solid (15-17% yield). LCMS: (M+1) m/z = 346.
  • 83
  • [ 55151-91-2 ]
  • C10H9F3INO [ No CAS ]
  • C15H10ClF3IN3O [ No CAS ]
YieldReaction ConditionsOperation in experiment
With trichlorophosphate at 110℃; for 1h; 111 Synthesis of Int-111-5 mixture of Int-111-4 (1.17 g, 3.41 mmol), oxadiazole acid (0.58 g, 4.09 mmol) and POCl3 (7 mL) was stirred at 110 °C for 1 h. After cooling to room temperature, excess POCl3 was removed under the reduced pressure. To the residue, H2O was added at 0 °C, and the mixture was stirred at 0 °C for 10 min. The precipitated crude chloroquinoline 5 was filtered, washed with H2O and dried under the reduced pressure. The crude product Int-111-5 was used for the next reaction without further purification.
  • 84
  • [ 55151-91-2 ]
  • C9H10FNO [ No CAS ]
  • C14H11ClFN3O [ No CAS ]
YieldReaction ConditionsOperation in experiment
39% With trichlorophosphate at 110℃; for 1h; 118 Synthesis of Int-118-7 A mixture of Int-118-6 (371 mg, 2.22 mmol), oxadiazole acid (380 mg, 2.67 mmol) and POCl3 (4.5 mL) was stirred at 110 °C for 1 h. After cooling to room temperature, excess POCl3 was removed under reduced pressure. The residue was partitioned between CH2Cl2 and H2O. The organic layer was separated, washed with sat. aq. NaHCO3, dried over Na2SO4 and concentrated. The residue was purified by column chromatography (Hexanes/EtOAc gradient) to give compound Int-118-7 as a pale brown solid (0.25 g, 39% yield). LCMS: (M+1) m/z = 292.
  • 85
  • [ 55151-91-2 ]
  • C8H5ClN2O [ No CAS ]
  • C13H6Cl2N4O [ No CAS ]
YieldReaction ConditionsOperation in experiment
92% With trichlorophosphate at 110℃; for 1h; 138 Synthesis of Int-138-6 A mixture of Int-138-5 (180 mg, 1.00 mmol), oxadiazole acid (175 mg, 1.23 mmol) and POCl3 (3 mL) was stirred at 110 °C for 1 h. After cooling to room temperature, excess POCl3 was removed under the reduced pressure. To the residue, H2O was added at 0 °C. The mixture was partitioned between EtOAc and brine. The aqueous layer was separated and extracted with EtOAc (×2). The combined organic layers were dried over Na2SO4 and concentrated to dryness. Product Int-138-6 as a brown solid was used for the next reaction without further purification (281 mg, 92% yield).
  • 86
  • [ 55151-91-2 ]
  • C7H5FINO [ No CAS ]
  • C12H6ClFIN3O [ No CAS ]
YieldReaction ConditionsOperation in experiment
With trichlorophosphate at 110℃; for 1h; 139 Synthesis of Int-139-Int-139-30 A mixture of aldehyde Int-139-Int-139-28 (5.74 g, 21.6 mmol), oxadiazole acid Int-139-Int-139-12 (3.69 g, 26.0 mmol) and POCl3 (22 mL) was stirred at 110 °C for 1 h. After cooling to room temperature, excess POCl3 was removed under reduced pressure. To this residue, H2O was added at 0 °C. and the mixture was stirred at 0 °C for 10 min. The crude chloride 29 was filtered, washed with H2O and dried under reduced pressure. To a suspension of 29 in EtOH (100 mL) were added 1,4- dioxa-8-azaspiro[4,5]decane (5.5 mL, 43.2 mmol) and DIPEA (7.5 mL, 43.2 mmol) at room temperature. The mixture was then heated at 120 °C overnight. After cooling to room temperature, the mixture was concentrated and purified by column chromatography (hexanes/EtOAc gradient) to give quinoline Int-139-Int-139-30 as yellow oil (2.50 g, 23% yield over two steps).
  • 87
  • [ 55151-91-2 ]
  • C7H5I2NO [ No CAS ]
  • C12H6ClI2N3O [ No CAS ]
YieldReaction ConditionsOperation in experiment
With trichlorophosphate at 110℃; for 1h; 140 Synthesis of Int-140-38 A mixture of aldehyde Int-140-36 (4.81 g, 12.9 mmol), oxadiazole acid 12 (3.69 g, 15.5 mmol) and POCl3 (13 mL) was stirred at 110 °C for 1 h. After cooling to room temperature, excess POCl3 was removed under reduced pressure. To this residue, H2O was added at 0 °C. The mixture was stirred at 0 °C for 10 min. The crude chloride Int-140-37 was filtered, washed with H2O and dried under reduced pressure. To a suspension of Int-140-37 in EtOH (65 mL) were added 1,4-dioxa-8- azaspiro[4,5]decane (3.3 mL, 25.8 mmol) and DIPEA (4.5 mL, 25.8 mmol) at room temperature. The mixture was then heated at 120 °C overnight. After cooling to room temperature, the mixture was concentrated and purified by column chromatography (hexanes/EtOAc gradient) to give quinoline Int-140-38 as yellow oil (1.56 g, 20% yield over two steps).
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