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[ CAS No. 919278-39-0 ] {[proInfo.proName]}

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Chemical Structure| 919278-39-0
Chemical Structure| 919278-39-0
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Product Details of [ 919278-39-0 ]

CAS No. :919278-39-0 MDL No. :MFCD03420215
Formula : C5H6F3N3 Boiling Point : -
Linear Structure Formula :- InChI Key :FDXLDVHECBHMRI-UHFFFAOYSA-N
M.W : 165.12 Pubchem ID :7015918
Synonyms :

Calculated chemistry of [ 919278-39-0 ]

Physicochemical Properties

Num. heavy atoms : 11
Num. arom. heavy atoms : 5
Fraction Csp3 : 0.4
Num. rotatable bonds : 2
Num. H-bond acceptors : 4.0
Num. H-bond donors : 1.0
Molar Refractivity : 32.89
TPSA : 43.84 Ų

Pharmacokinetics

GI absorption : High
BBB permeant : Yes
P-gp substrate : No
CYP1A2 inhibitor : No
CYP2C19 inhibitor : No
CYP2C9 inhibitor : No
CYP2D6 inhibitor : No
CYP3A4 inhibitor : No
Log Kp (skin permeation) : -6.88 cm/s

Lipophilicity

Log Po/w (iLOGP) : 0.86
Log Po/w (XLOGP3) : 0.6
Log Po/w (WLOGP) : 2.3
Log Po/w (MLOGP) : 0.29
Log Po/w (SILICOS-IT) : 0.58
Consensus Log Po/w : 0.93

Druglikeness

Lipinski : 0.0
Ghose : None
Veber : 0.0
Egan : 0.0
Muegge : 1.0
Bioavailability Score : 0.55

Water Solubility

Log S (ESOL) : -1.45
Solubility : 5.91 mg/ml ; 0.0358 mol/l
Class : Very soluble
Log S (Ali) : -1.09
Solubility : 13.3 mg/ml ; 0.0805 mol/l
Class : Very soluble
Log S (SILICOS-IT) : -1.33
Solubility : 7.65 mg/ml ; 0.0463 mol/l
Class : Soluble

Medicinal Chemistry

PAINS : 0.0 alert
Brenk : 0.0 alert
Leadlikeness : 1.0
Synthetic accessibility : 1.64

Safety of [ 919278-39-0 ]

Signal Word:Warning Class:N/A
Precautionary Statements:P261-P305+P351+P338 UN#:N/A
Hazard Statements:H315-H319-H335 Packing Group:N/A
GHS Pictogram:

Application In Synthesis of [ 919278-39-0 ]

* 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 [ 919278-39-0 ]

[ 919278-39-0 ] Synthesis Path-Downstream   1~88

  • 1
  • [ 919278-38-9 ]
  • [ 919278-39-0 ]
YieldReaction ConditionsOperation in experiment
100% With palladium 10% on activated carbon; hydrogen; In methanol; at 20℃; for 3h; To a solution of 4-nitro- 1 -(2,2,2- trifluoroethyl)pyrazole (2.0 g, 10.25 mmol) in MeOH (30 ml) was added 10 % Pd/C (200 mg) under N2. The suspension was degassed under vacuum and purged with H2 several times. The mixture was stirred under H2 atmosphere at rt for 3 h. The reaction mixture was filtered. The filtrate was concentrated under reduced pressure to give the title compound as red brown oil (Y = 100 %). lH NMR (400 MHz, chloroform-i/) d ppm 7.21 (s, 1H), 7.07 (s, 1H), 4.59 - 4.50 (m, (1212) 2H), 3.41 (s, 2H).
99.24% With hydrogen;palladium 10% on activated carbon; In ethanol; at 23℃; under 2585.81 Torr; for 0.666667h; As shown in step 16-iii of Scheme 16, to a solution of Compound 2046 (40.4 g, 207.1 mmol) in EtOH (600 mL) in a Parr bottle was added palladium (10 g, 9.397 mmol) (Pd/C, 10 wt% dry basis, wet, Degussa type). The mixture was placed under 50 p.s.i. of hydrogen gas and shaken at 23C for 40 minutes . The reaction mixture was through a Corning 0.22 muiotaeta PES membrane and the filtrate was concentrated to give 1 -(2,2,2- trifluoroethyl)pyrazol-4-amine (Compound 2047, 33.94 g, 205.6 mmol, 99.24% yield) as a clear reddish oil: 1H NMR (CDC13, 300 MHz) delta 7.26 (s, 1H), 7.10 (s, 1H), 4.59 (q, J = 9 Hz, 2H), 2.95 (br s, 2H). ESMS (M+H) 165.97
95% With palladium 10% on activated carbon; hydrogen; In ethanol; at 25℃; under 760.051 Torr; for 16h; Under hydrogen (1 atm), to a solution of compound 69-b (1.5 g, 7.69 mmol) in ethanol (5 mL) was added 10% Pd-C (0.15 g). The mixture was stirred at 25 C. for 16 hours, and then filtrated, the filtrate was concentrated under reduced pressure to give red brown oil 69-a (1.2 g, yield: 95%), which was used directly for the next step without purification. LC-MS (ESI): m/z=166 [M+H]+.
89% With hydrogen;palladium 10% on activated carbon; In methanol; at 20℃; for 3h; To a solution of 4-nitro-l- (2, 2, 2-trifluoroethyl) pyrazole (1.85 g, 9.5 mmol) in methanol (20 mL) was added 10% palladium carbon (containing 50% water, 742 mg) , and the mixture was . stirred under a hydrogen atmosphere at room temperature for 3 EPO <DP n="139"/>hr. The catalyst was filtered off and the filtrate was concentrated under reduced pressure. The residue was purified by column chromatography (silica gel, hexane/ethyl acetate=70/30_»0/100) to give the title compound (1.40 g, 89%) as a pale-brown oil.1H-NMR (CDCl3, 300 MHz) delta 2.98 (2H, br s), 4.57 (2H, q, J = 8.4Hz), 7.09 (IH, s), 7.25 (IH, s) .
With hydrogen;palladium 10% on activated carbon; In methanol; for 3h; To a solution of 4-nitro- IH-pyrazole (300 mg, 2.7 mmol) in N.N-dimethylformamide (3 mL) was added l, l, l-trifluoro-2-iodoethane (1.13 g, 5.4 mmol) and cesium carbonate (1 g, 3.1 mmol) and the mixture was stirred at 60 C for 18 h. The reaction was partitioned between ether and 5% aqueous lithium chloride solution. The organic phase was dried (MgS04) filtered and evaporated to afford a crude residue which was purified by silica gel chromatography (dichloromethane) to give 4-nitro- 1- (2,2,2-trifluoroethyl)- m-pyrazole (198 mg) as a solid. 1Eta NMR (400 MHz, CDC13) delta 8.29 (s, 1H), 8.16 (s, 1H), 4.77 (q, 2H). To a solution of 4-nitro-l-(2,2,2-trifluoroethyl)-lH- pyrazole (190 mg, 0.97 mmol) in methanol (10 mL) was added 10% Pd/C (80 mg) and the mixture was stirred under hydrogen for 3 h. The reaction was filtered and the filtrate was evaporated to afford l-(2,2,2-trifluoroethyl)-lH-pyrazol-4-amine which was used directly without any further purification.
490 mg With palladium 10% on activated carbon; hydrogen; In methanol; at 10 - 35℃; for 12h; To a suspension of 4-nitro-lH-pyrazole (500 mg) and potassium carbonate (1.22 g) in DMF (5 mL) was added dropwise 2, 2, 2-trifluoroethyl trifluoromethanesulfonate (1.54 g) . The reaction mixture was stirred at room temperature for 4 hr, treated with water, and extracted with ethyl acetate. The extract was dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. A mixture of the residue obtained above and 10% palladium on carbon (1 g) in methanol (30 mL) was stirred under a hydrogen atmosphere at room temperature for 12 hr, filtered, and concentrated under reduced pressure. The residue was purified by preparative HPLC to give the title compound (490 mg) . 1 NMR (300 MHz, DMSO-d6) delta 3.97 (2H, brs) , 4.88 (2H, q, J = 9.1 Hz), 7.04 (1H, s) , 7.10 (1H, s) .
490 mg With palladium on activated charcoal; hydrogen; In methanol; at 20℃; for 12h; A) 1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-amine To a suspension of 4-nitro-1H-pyrazole (500 mg) and potassium carbonate (1.22 g) in DMF (5 mL) was added dropwise 2,2,2-trifluoroethyl trifluoromethanesulfonate (1.54 g). The reaction mixture was stirred at room temperature for 4 hr, water was added thereto, and the mixture was extracted with ethyl acetate. The extract was dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. A suspension of the obtained residue and palladium on carbon (1 g) in methanol (30 mL) was stirred at room temperature for 12 hr under a hydrogen atmosphere, filtered, and concentrated under reduced pressure. The residue was purified by preparative HPLC to give the title compound (490 mg). 1H NMR (300 MHz, DMSO-d6) delta 3.97 (2H, brs), 4.88 (2H, q, J=9.1 Hz), 7.04 (1H, s), 7.10 (1H, s)

  • 2
  • [ 919278-39-0 ]
  • [ 919278-09-4 ]
  • [ 32315-10-9 ]
  • 1-{2-chloro-4-[(5-methyl-5H-pyrrolo[3,2-d]pyrimidin-4-yl)oxy]phenyl}-3-[1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl]urea [ No CAS ]
  • 3
  • [ 919278-39-0 ]
  • [ 887341-00-6 ]
  • (1S,2S,3R,4R)-3-(2-chloro-5-fluoropyrimidin-4-ylamino)bicyclo[2.2.1]hept-5-ene-2-carboxamide [ No CAS ]
  • [ 1258556-16-9 ]
YieldReaction ConditionsOperation in experiment
Example 64 (1S,2S,3R,4R)-3-[2-[1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl]amino}-5-(trifluoromethyl)pyrimidin-4-yl]amino}bicyclo[2.2.1]hept-5-ene-2-carboxamide The title compound was prepared as described in Example 1, substituting <strong>[919278-39-0]1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-amine</strong> for 1-methyl-1H-pyrazol-4-amine in Example 1B along with substitution of (+)-(1S,2S,3R,4R)-3-aminobicyclo[2.2.1]hept-5-ene-2-carboxamide for (+/-)-(1S,2S,3R,4R)-3-aminobicyclo[2.2.1]hept-5-ene-2-carboxamide and 2,4-dichloro-5-(trifluoromethyl)pyrimidine for 2,4-dichloro-5-fluoropyrimidine in Example 1A. 1H NMR (501 MHz, DMSO-D6) ppm 1.28 (d, J=5.7 Hz, 2H) 1.41 (d, J=8.5 Hz, 1H) 2.05 (d, J=9.0 Hz, 1H) 2.53 (d, J=8.3 Hz, 1H) 2.84 (d, J=35.1 Hz, 2H) 4.20 (t, J=7.5 Hz, 1H) 4.88-5.07 (m, 2H) 6.23-6.35 (m, 2H) 7.74 (s, 1H) 7.88 (d, J=19.7 Hz, 2H) 8.11 (s, 1H) 9.28 (s, 1H); MS (ESI(+)) m/e 462 (M+1)+.
  • 4
  • [ 919278-39-0 ]
  • [ 887341-00-6 ]
  • (1S,2S,3R,4R)-3-(2-chloro-5-fluoropyrimidin-4-ylamino)bicyclo[2.2.1]hept-5-ene-2-carboxamide [ No CAS ]
  • [ 1258556-75-0 ]
YieldReaction ConditionsOperation in experiment
Example 66 (1S,2S,3R,4R)-3-[(5-chloro-2-[1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl]amino}pyrimidin-4-yl)amino]bicyclo[2.2.1]hept-5-ene-2-carboxamide The title compound was prepared as described in Example 1, substituting <strong>[919278-39-0]1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-amine</strong> for 1-methyl-1H-pyrazol-4-amine in Example 1B along with substitution of (+)-(1S,2S,3R,4R)-3-aminobicyclo[2.2.1]hept-5-ene-2-carboxamide for (+/-)-(1S,2S,3R,4R)-3-aminobicyclo[2.2.1]hept-5-ene-2-carboxamide and 2,4,5-trichloropyrimidine for 2,4-dichloro-5-fluoropyrimidine in Example 1A. 1H NMR (300 MHz, DMSO-D6) ppm 1.41 (d, J=8.7 Hz, 1H) 2.10 (d, J=8.7 Hz, 1H) 2.82 (d, J=31.7 Hz, 2H) 4.11 (t, J=7.5 Hz, 1H) 5.06 (q, J=9.4 Hz, 2H) 6.13-6.44 (m, 2H) 7.26 (s, 1H) 7.55-7.95 (m, 6H) 9.20 (s, 1H); MS (ESI(+)) m/e 428 (M+1)+.
  • 5
  • [ 919278-39-0 ]
  • [ 106-96-7 ]
  • [ 1315544-86-5 ]
YieldReaction ConditionsOperation in experiment
48% With potassium carbonate; In N,N-dimethyl-formamide; at 20 - 25℃; for 18h; As shown in step 21-i of Scheme 21, to a round-bottomed flask containing 1- (2,2,2-trifluoroethyl)pyrazol-4-amine (2.01 g, 12.2 mmol) and potassium carbonate (3.364 g, 24.34 mmol) under an atmosphere of nitrogen was added DMF (15 mL), followed by the addition of 3-bromoprop-l-yne (1.45 g, 1.09 mL, 12.2 mmol). The reaction mixture was stirred at RT for 18 hours. Water and EtOAc were added and the aqueous layer extracted with EtOAc. The combined organics were washed with brine, water, dried (sodium sulfate), filtered, and concentrated under reduced pressure. Purification by silica gel chromatography (petroleum ether :EtO Ac, 1 : 1) gave N-(prop-2-ynyl)-l-(2,2,2-trifluoroethyl)-lH-pyrazol-4- amine (Compound 2064, 1.19g, 48% yield) as an orange solid: 1H NMR (CDC13, 300 MHz) delta 7.32 (1H, s), 7.16 (1H, s), 4.62 (2H, q), 3.81 (2H, dd), 3.20 (1H, t), 2.27 (1H, t).
  • 6
  • [ 22929-52-8 ]
  • [ 919278-39-0 ]
  • [ 7677-24-9 ]
  • [ 1315544-94-5 ]
YieldReaction ConditionsOperation in experiment
32.91% In acetic acid; at 0 - 23℃; As shown in step 24-i of Scheme 24, trimethylsilylcyanide (4.241 g, 5.700 mL, 42.75 mmol) was added to a solution of l-(2,2,2-trifluoroethyl)pyrazol-4-amine (7.059 g, 42.75 mmol) and <strong>[22929-52-8]tetrahydrofuran-3-one</strong> (3.68 g, 42.75 mmol) in AcOH (45 mL) at 0°C via syringe over 30 seconds. The reaction mixture was slowly warmed to 23°C. After stirring for 16 hours, the mixture was added to 1 :1 ammonium hydroxide:ice (200 mL) and extracted with DCM (2 x 200 mL). The organics were dried (magnesium sulfate) filtered and concentrated. The residue was purified by medium pressure silica gel chromatography (0-100percent EtOAc in hexanes to provide 3-[[l-(2,2,2-trifluoroethyl)pyrazol-4-yl]amino]tetrahydrofuran-3- carbonitrile (Compound 2075, 3.66 g, 14.07 mmol, 32.91percent yield) as a brown oil: ESMS (M+H) 261.32; 1H NMR (CDC13, 300 MHz) delta 7.47 (s, 1 H), 7.46 (s, 1 H), 4.68 (q, J = 9, 2 H), 4.06 (m, 4 H), 2.42 (m, 3 H).
  • 7
  • [ 699-98-9 ]
  • [ 919278-39-0 ]
  • [ 1315544-72-9 ]
YieldReaction ConditionsOperation in experiment
47.27% As shown in step 16-iv of Scheme 16, to Compound 2047 (7.16 g, 43.36 mmol) in THF (204.6 mL) at 23C was added furo[3,4-¾]pyridine-5,7-dione (6.465 g, 43.36 mmol) followed by the addition of DMAP (52.97 mg, 0.4336 mmol). The reaction mixture was stirred at 50C. After 3 hours, acetic anhydride (8.853 g, 8.182 mL, 86.72 mmol) was added and the reaction mixture heated at 70C for another 1.5 hours. After cooling, the reaction mixture was concentrated and the residue partitioned between DCM and saturated aqueous NaHC03 (100 mL each). The aqueous layer was extracted with DCM (50 mL) and the combined organics were washed with saturated aqueous NaHC03 (100 mL), dried (MgS04), filtered, and concentrated under reduced pressure. The residue was recrystallized from hot EtOAc/hexanes to give 6-(l-(2,2,2-trifluoroethyl)-lH-pyrazol-4-yl)-5H-pyrrolo[3,4- £]pyridine-5,7(6H)-dione (Compound 2048, 6.07 g, 20.49 mmol, 47.27%>) as yellow needles: ESMS (Mu+Eta) 297.23; 1H NMR (CDC13, 300 MHz) delta 9.05 (m, 1H), 8.32 (s, 1H), 8.31 (s, 1H), 8.26 (m, 1H), 7.70 (m, 1H), 4.79 (q, J = 9 Hz, 2H).
  • 8
  • [ 919278-39-0 ]
  • [ 1315544-73-0 ]
  • 9
  • [ 919278-39-0 ]
  • [ 1315545-14-2 ]
  • 10
  • [ 919278-39-0 ]
  • [ 1315544-74-1 ]
  • 11
  • [ 919278-39-0 ]
  • [ 1315544-75-2 ]
  • 12
  • [ 919278-39-0 ]
  • [ 1315544-76-3 ]
  • 13
  • [ 919278-39-0 ]
  • [ 1315537-94-0 ]
  • 14
  • [ 919278-39-0 ]
  • [ 1315538-24-9 ]
  • [ 1315538-23-8 ]
  • 15
  • [ 919278-39-0 ]
  • [ 1315544-77-4 ]
  • 16
  • [ 919278-39-0 ]
  • [ 1315544-78-5 ]
  • 17
  • [ 919278-39-0 ]
  • [ 1315544-79-6 ]
  • 18
  • [ 919278-39-0 ]
  • [ 1315544-80-9 ]
  • 19
  • [ 919278-39-0 ]
  • [ 1315537-19-9 ]
  • 20
  • [ 919278-39-0 ]
  • [ 1315544-81-0 ]
  • 21
  • [ 919278-39-0 ]
  • 2-chloro-7-hydroxy-6-(1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl)-6,7-dihydro-5H-pyrrolo[3,4-b]pyridin-5-one [ No CAS ]
  • 22
  • [ 919278-39-0 ]
  • [ 1315538-06-7 ]
  • 23
  • [ 919278-39-0 ]
  • [ 1315544-83-2 ]
  • 24
  • [ 919278-39-0 ]
  • [ 1315544-84-3 ]
  • 25
  • [ 919278-39-0 ]
  • [ 1315544-85-4 ]
  • 26
  • [ 919278-39-0 ]
  • [ 1315537-77-9 ]
  • 31
  • [ 919278-39-0 ]
  • [ 1315544-92-3 ]
  • 32
  • [ 919278-39-0 ]
  • [ 1315541-27-5 ]
  • 33
  • [ 919278-39-0 ]
  • [ 1315537-14-4 ]
  • 34
  • [ 919278-39-0 ]
  • [ 1315544-95-6 ]
  • 35
  • [ 919278-39-0 ]
  • [ 1315544-97-8 ]
  • 36
  • [ 919278-39-0 ]
  • [ 1315544-96-7 ]
  • 37
  • [ 919278-39-0 ]
  • [ 1315544-98-9 ]
  • 38
  • [ 919278-39-0 ]
  • [ 1315544-99-0 ]
  • 39
  • [ 919278-39-0 ]
  • [ 1315545-00-6 ]
  • 40
  • [ 919278-39-0 ]
  • [ 1315544-13-8 ]
  • 41
  • [ 919278-39-0 ]
  • [ 1315544-66-1 ]
  • [ 1315535-73-9 ]
YieldReaction ConditionsOperation in experiment
9% With N-ethyl-N,N-diisopropylamine; In N,N-dimethyl-formamide; at 110℃; for 3h; As shown in step 9-v of Scheme 9, Compound 2033 (100 mg, 0.252 mmol), 1- (2,2,2-trifluoroethyl)-4-aminopyrazole (42 mg, 0.25 mmol), and DIEA (65 mg, 0.5 mmol) were dissolved in 4 mL of DMF and heated for 3 hours at 110C. The reaction mixture was cooled, diluted with water, and extracted with EtOAc. The organics were washed with water, brine, dried over sodium sulfate, and solvent removed under reduced pressure. The crude product was passed through a plug of silica gel, which was eluted with 5% EtOH/EtOAc. Purification of the filtrate by silica gel chromatography (5% MeOH/DCM - 7.5%MeOH/DCM) gave 2-(5,6-dimethoxypyridin-3-yl)-4-methoxy-6-(l-(2,2,2-trifluoroethyl)-lH- pyrazol-4-yl)-6,7-dihydro-5H-pyrrolo[3,4-¾]pyridin-5-one (Compound 88, 11 mg, 9% yield) as a bei e solid: ESMS (M+l) 450.
  • 42
  • [ 919278-39-0 ]
  • [ 1315544-90-1 ]
  • [ 1315544-91-2 ]
YieldReaction ConditionsOperation in experiment
80% With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine; In N,N-dimethyl-formamide; at 23℃; for 2h; As shown in step 22-ii of Scheme 22, to a solution of 1 -(2,2,2- trifluoroethyl)pyrazol-4-amine (Compound 2047, 5.78 g, 35.0 mmol), 2-chloro-6-(5,6- dimethoxy-3-pyridyl)pyridine-3-carboxylic acid (Compound 2068, 9.38 g, 31.8 mmol) and HBTU (13.28 g, 35.0 mmol) in DMF (150 mL) at 23 C was added DIEA (12.35 g, 16.64 mL, 95.52 mmol). The reaction mixture was stirred for 2 h and then partitioned between EtOAc (400 mL) and water (400 mL). The organic layer was separated, washed with water (400 mL), 10% aqueous Na2C03 (300 mL), brine (300 mL), combined brine and 2 N HC1 (300 mL, 20 mL), and brine (300 mL). The organic layer was then diluted with EtOAc (150 mL) and EtOH (70 mL) and warmed to 75 C with swirling to give a clear solution. The solution was treated with MgS04 and filtered while still warm. After concentration under reduced pressure, the residue was dissolved/suspended in EtOAc (200 mL) and spun at 80 C for 1 h to give a uniform suspension. Hexanes (200 mL) were added and the resulting suspension was left standing at 23 C for 14 h. The precipitate was collected via filtration, washed with hexanes (100 mL) to provide 2-chloro-6-(5,6-dimethoxy-3-pyridyl)-N-[l-(2,2,2- trifluoroethyl)pyrazol-4-yl]pyridine-3-carboxamide (Compound 2069, 11.32 g, 80% yield) as a white solid after drying in vacuo: ESMS (M+H) 442.50; 1H NMR (DMSO-d6, 300 MHz) delta 10.86 (s, 1 H), 8.49 (d, J = 1.89, 1 H), 8.25 (s, 1 H), 8.16 (m, 2 H), 7.88 (d, J = 1.89, 1 H), 7.66 (s, 1 H), 5.16 (q, J = 9.10, 2 H), 3.95 (s, 3 H), 3.92 (s, 3 H).
  • 43
  • [ 919278-39-0 ]
  • [ 1566543-84-7 ]
  • [ 1566543-04-1 ]
YieldReaction ConditionsOperation in experiment
26% With toluene-4-sulfonic acid; In 1,4-dioxane; at 120℃; for 3h;Microwave irradiation; 1-(2-(2-(5-Chloro-2-((1-(2, 2, 2-trifluoroethyl) - 1H-pyrazol-4-yI)amino)pyrimidin-4- yI)ethyl)phenyl)cyclopropanecarboxamide (29)A mixture of i-(2,2,2-trifluoroethyl)-1H-pyrazol-4-amine (0.160 g, 0.967 mmol), i-(2- (2-(2, 5-dichloropyrimidin-4-yl)ethyl)phenyl)cyclopropanecarboxam ide Al 4 (0.101 g,0.300 mmol) and TsOH.H20 (0.010 g, 0.051 mmol) in 1,4-dioxane (2.0 mL) was heated to 120 00 for 3 hours in the microwave. The mixture was concentrated under reduced pressure and purified using silica gel column chromatography (0-100%EtOAc in petroleum benzine 40-60 C) to give the title compound 29 (0.036 g, 26%).LCMS-D: rt 3.402 mm; m/z 465.2 [M+H].
  • 44
  • [ 919278-39-0 ]
  • [ 3535-37-3 ]
  • [ 1363775-28-3 ]
YieldReaction ConditionsOperation in experiment
93% With triethylamine; In dichloromethane; at 0 - 20℃; for 2h; To pyrazole (3 mmol, 1.0 equiv) and Et3N (4.5 mmol, 1.5 equiv) dissolved in dichloromethane (15 mL) was added acyl chloride (3.15 mmol, 1.05 equiv) in an ice-waterbath. After the completion of addition, the resultant reaction mixture was warmed to room temperature and kept for 2hrs. On the completion of the reaction, the solvent of the reaction mixture was removed under reduced pressure. The residue was poured into water (50 mL) andthe desired product was obtained.
  • 45
  • [ 919278-39-0 ]
  • [ 1637587-33-7 ]
  • 46
  • [ 919278-39-0 ]
  • [ 1637587-35-9 ]
  • 47
  • [ 919278-39-0 ]
  • [ 1637587-36-0 ]
  • 48
  • [ 919278-39-0 ]
  • [ 1637587-37-1 ]
  • 49
  • [ 919278-39-0 ]
  • [ 1637587-38-2 ]
  • 50
  • [ 919278-39-0 ]
  • [ 1637587-39-3 ]
  • 51
  • [ 919278-39-0 ]
  • [ 1637587-40-6 ]
  • 52
  • [ 919278-39-0 ]
  • [ 1637587-41-7 ]
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  • [ 1637587-42-8 ]
  • 54
  • [ 919278-39-0 ]
  • [ 1637587-50-8 ]
  • 55
  • [ 919278-39-0 ]
  • [ 1637587-25-7 ]
  • 56
  • [ 108-86-1 ]
  • [ 919278-39-0 ]
  • [ 1637587-26-8 ]
YieldReaction ConditionsOperation in experiment
46% With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; caesium carbonate; In 1,4-dioxane; water; at 110℃;Inert atmosphere; General procedure: To 1,4-dioxane (15 mL) and water (1 mL) mixture were added bromopyridine (3 mmol, 1.0 equiv), substituted pyrazole (3.6 mmol, 1.2 equiv), Pd(dppf)Cl2 (0.3mmol, 1.0 equiv) and Cs2CO3 (6 mmol, 2.0 equiv) under N2 atmosphere. The reaction mixture was warmed to 110 C and kept overnight. After the completion of the reaction, the content was poured into water (100 mL) and extracted with ethyl acetate. The combined organic phase was dried over Na2SO4 and the solvent was removed under reduced pressure. Desired product was obtained after purification with flash chromatography(PE/EtOAc = 1:0~1:1).
  • 57
  • [ 919278-39-0 ]
  • [ 1236354-21-4 ]
  • [ 1637587-27-9 ]
YieldReaction ConditionsOperation in experiment
73% With pyridine; oxygen; copper diacetate; In dichloromethane; for 48h;Reflux; To dichloromethane (15 mL) was added aminopyrazole (5 mmol, 1.0equiv), phenyl boric acid (7.5 mmol, 1.5 equiv), Cu(OAc)2 (10 mmol, 2.0 equiv) and anhydrous pyridine (50 mmol, 10.0 equiv) under O2 atmosphere. The reaction mixture was heated to reflux and kept for 48 hrs. After the completion of the reaction, the solvent was evaporated under reduced pressure. The residue was purified with flash chromatography (PE/EtOAc = 1:0~3:1) to generate the desired product.
  • 58
  • [ 919278-39-0 ]
  • 2-halo-4-methylpyrimidine [ No CAS ]
  • [ 1637587-17-7 ]
YieldReaction ConditionsOperation in experiment
80% With toluene-4-sulfonic acid; In isopropyl alcohol; at 145℃; for 1h;Microwave irradiation; General procedure: Aminopyrazole (3.0 mmol, 1.0 equiv), halide (3.15mmol, 1.05 equiv) and TsOH (3.0 mmol, 1.0 equiv) were added to 2-propanol (10 mL). The resultant mixture was reacted under microwave radiation at 145 C for 1hrs. On the completion of the reaction, the solvent was removed under reduced pressure. To the residue was added water (50 mL),neutralized with saturated aqueous NaHCO3, extracted with ethyl acetate. The combined organic phase was successively washed with water, brine for three times and dried over Na2SO4. Afterthe removal of the solvent, purification of the residue with flash chromatography (MeOH/H2O =0:1~10:1) gave the desired product.
  • 59
  • [ 919278-39-0 ]
  • 2-halo-5-fluoropyridine [ No CAS ]
  • [ 1637587-15-5 ]
YieldReaction ConditionsOperation in experiment
83% With toluene-4-sulfonic acid; In isopropyl alcohol; at 150℃; for 1.5h;Microwave irradiation; General procedure: Aminopyrazole (3.0 mmol, 1.0 equiv), halide (3.15mmol, 1.05 equiv) and TsOH (3.0 mmol, 1.0 equiv) were added to 2-propanol (10 mL). The resultant mixture was reacted under microwave radiation at 145 C for 1hrs. On the completion of the reaction, the solvent was removed under reduced pressure. To the residue was added water (50 mL),neutralized with saturated aqueous NaHCO3, extracted with ethyl acetate. The combined organic phase was successively washed with water, brine for three times and dried over Na2SO4. Afterthe removal of the solvent, purification of the residue with flash chromatography (MeOH/H2O =0:1~10:1) gave the desired product.
  • 60
  • [ 919278-39-0 ]
  • 2-halo-5-methylpyrazine [ No CAS ]
  • [ 1637587-19-9 ]
YieldReaction ConditionsOperation in experiment
68% With toluene-4-sulfonic acid; In isopropyl alcohol; at 150℃; for 1.5h;Microwave irradiation; General procedure: Aminopyrazole (3.0 mmol, 1.0 equiv), halide (3.15mmol, 1.05 equiv) and TsOH (3.0 mmol, 1.0 equiv) were added to 2-propanol (10 mL). The resultant mixture was reacted under microwave radiation at 145 C for 1hrs. On the completion of the reaction, the solvent was removed under reduced pressure. To the residue was added water (50 mL),neutralized with saturated aqueous NaHCO3, extracted with ethyl acetate. The combined organic phase was successively washed with water, brine for three times and dried over Na2SO4. Afterthe removal of the solvent, purification of the residue with flash chromatography (MeOH/H2O =0:1~10:1) gave the desired product.
  • 61
  • [ 919278-39-0 ]
  • 2-halo-5-methylpyridine [ No CAS ]
  • [ 1637587-13-3 ]
YieldReaction ConditionsOperation in experiment
81% With toluene-4-sulfonic acid; In isopropyl alcohol; at 150℃; for 1.5h;Microwave irradiation; General procedure: Aminopyrazole (3.0 mmol, 1.0 equiv), halide (3.15mmol, 1.05 equiv) and TsOH (3.0 mmol, 1.0 equiv) were added to 2-propanol (10 mL). The resultant mixture was reacted under microwave radiation at 145 C for 1hrs. On the completion of the reaction, the solvent was removed under reduced pressure. To the residue was added water (50 mL),neutralized with saturated aqueous NaHCO3, extracted with ethyl acetate. The combined organic phase was successively washed with water, brine for three times and dried over Na2SO4. Afterthe removal of the solvent, purification of the residue with flash chromatography (MeOH/H2O =0:1~10:1) gave the desired product.
  • 62
  • [ 919278-39-0 ]
  • 2-halo-5-methylpyrimidine [ No CAS ]
  • [ 1637587-18-8 ]
YieldReaction ConditionsOperation in experiment
77% With toluene-4-sulfonic acid; In isopropyl alcohol; at 145℃; for 1h;Microwave irradiation; General procedure: Aminopyrazole (3.0 mmol, 1.0 equiv), halide (3.15mmol, 1.05 equiv) and TsOH (3.0 mmol, 1.0 equiv) were added to 2-propanol (10 mL). The resultant mixture was reacted under microwave radiation at 145 C for 1hrs. On the completion of the reaction, the solvent was removed under reduced pressure. To the residue was added water (50 mL),neutralized with saturated aqueous NaHCO3, extracted with ethyl acetate. The combined organic phase was successively washed with water, brine for three times and dried over Na2SO4. Afterthe removal of the solvent, purification of the residue with flash chromatography (MeOH/H2O =0:1~10:1) gave the desired product.
  • 63
  • [ 919278-39-0 ]
  • 2-halo-5-nitropyridine [ No CAS ]
  • [ 1637587-16-6 ]
YieldReaction ConditionsOperation in experiment
63% With toluene-4-sulfonic acid; In isopropyl alcohol; at 150℃; for 1.5h;Microwave irradiation; General procedure: Aminopyrazole (3.0 mmol, 1.0 equiv), halide (3.15mmol, 1.05 equiv) and TsOH (3.0 mmol, 1.0 equiv) were added to 2-propanol (10 mL). The resultant mixture was reacted under microwave radiation at 145 C for 1hrs. On the completion of the reaction, the solvent was removed under reduced pressure. To the residue was added water (50 mL),neutralized with saturated aqueous NaHCO3, extracted with ethyl acetate. The combined organic phase was successively washed with water, brine for three times and dried over Na2SO4. Afterthe removal of the solvent, purification of the residue with flash chromatography (MeOH/H2O =0:1~10:1) gave the desired product.
  • 64
  • [ 919278-39-0 ]
  • 2-halo-6-cyanopyridine [ No CAS ]
  • [ 1637587-14-4 ]
YieldReaction ConditionsOperation in experiment
88% With toluene-4-sulfonic acid; In isopropyl alcohol; at 150℃; for 1.5h;Microwave irradiation; General procedure: Aminopyrazole (3.0 mmol, 1.0 equiv), halide (3.15mmol, 1.05 equiv) and TsOH (3.0 mmol, 1.0 equiv) were added to 2-propanol (10 mL). The resultant mixture was reacted under microwave radiation at 145 C for 1hrs. On the completion of the reaction, the solvent was removed under reduced pressure. To the residue was added water (50 mL),neutralized with saturated aqueous NaHCO3, extracted with ethyl acetate. The combined organic phase was successively washed with water, brine for three times and dried over Na2SO4. Afterthe removal of the solvent, purification of the residue with flash chromatography (MeOH/H2O =0:1~10:1) gave the desired product.
  • 65
  • [ 919278-39-0 ]
  • 2-halopyridine [ No CAS ]
  • [ 1637587-12-2 ]
YieldReaction ConditionsOperation in experiment
76% With toluene-4-sulfonic acid; In isopropyl alcohol; at 150℃; for 1.5h;Microwave irradiation; General procedure: Aminopyrazole (3.0 mmol, 1.0 equiv), halide (3.15mmol, 1.05 equiv) and TsOH (3.0 mmol, 1.0 equiv) were added to 2-propanol (10 mL). The resultant mixture was reacted under microwave radiation at 145 C for 1hrs. On the completion of the reaction, the solvent was removed under reduced pressure. To the residue was added water (50 mL),neutralized with saturated aqueous NaHCO3, extracted with ethyl acetate. The combined organic phase was successively washed with water, brine for three times and dried over Na2SO4. Afterthe removal of the solvent, purification of the residue with flash chromatography (MeOH/H2O =0:1~10:1) gave the desired product.
  • 66
  • [ 919278-39-0 ]
  • 2-halopyrimidine [ No CAS ]
  • [ 1637587-10-0 ]
YieldReaction ConditionsOperation in experiment
84% With toluene-4-sulfonic acid; In isopropyl alcohol; at 145℃; for 1h;Microwave irradiation; General procedure: Aminopyrazole (3.0 mmol, 1.0 equiv), halide (3.15mmol, 1.05 equiv) and TsOH (3.0 mmol, 1.0 equiv) were added to 2-propanol (10 mL). The resultant mixture was reacted under microwave radiation at 145 C for 1hrs. On the completion of the reaction, the solvent was removed under reduced pressure. To the residue was added water (50 mL),neutralized with saturated aqueous NaHCO3, extracted with ethyl acetate. The combined organic phase was successively washed with water, brine for three times and dried over Na2SO4. Afterthe removal of the solvent, purification of the residue with flash chromatography (MeOH/H2O =0:1~10:1) gave the desired product.
  • 67
  • [ 919278-39-0 ]
  • C16H15ClN6O2S2 [ No CAS ]
  • 2-(1-(ethylsulfonyl)-3-(4-(2-((1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl)amino)thieno[3,2-d]pyrimidin-4-yl)-1H-pyrazol-1-yl)azetidin-3-yl)acetonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
38% With toluene-4-sulfonic acid; In butan-1-ol; at 110℃; for 18h; Compound 69-a (176 mg, 1.07 mmol) and compound 5 (150 mg, 0.36 mmol) were dissolved in n-butanol (0.5 mL), p-toluene sulfonic acid monohydrate (170 mg, 0.89 mmol) was added. The mixture was heated to 110 C. and stirred for 18 hours, then cooled to room temperature. The mixture was concentrated under reduced pressure to remove the solvent, the residue was treated with saturated aqueous sodium bicarbonate solution (50 mL), extracted with dichloromethane (50 mL×2). The organic layers were combined, dried over anhydrous sodium sulfate, then filtrated, the filtrate was concentrated under reduced pressure. The residue was purified by preparation TLC (chromatographic solution:ethyl acetate) to give yellow solid T-69 (73 mg, yield: 38%). LC-MS (ESI): m/z=552 [M+H]+. (0435) 1H-NMR (400 MHz, CDCl3) delta: 8.47 (s, 1H), 8.35 (s, 1H), 8.18 (s, 1H), 7.91 (d, J=5.2 Hz, 1H), 7.63 (s, 1H), 7.34 (d, J=5.2 Hz, 1H), 7.22 (s, 1H), 4.74 (dd, J=16.8 Hz, J=8.4 Hz, 2H), 4.64 (d, J=9 Hz, 2H), 4.24 (d, J=9 Hz, 2H), 3.41 (s, 2H), 3.10 (q, J=7 Hz, 2H), 1.42 (t, J=7 Hz, 3H) ppm
  • 68
  • [ 919278-39-0 ]
  • [ 1609082-37-2 ]
  • 8-[(2,6-difluorobenzyl)oxy]-2,6-dimethyl-N-[1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl]imidazo[1,2-a]pyridine-3-carboxamide [ No CAS ]
YieldReaction ConditionsOperation in experiment
81% With N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; In N,N-dimethyl-formamide; at 20℃; 80 mg of 8-[(2,6-difluorobenzyl)oxy]-6-fluoro-2-methylimidazo[ 1 ,2-a]pyridine-3-carboxylic acid (Example hA; 0.24 mmol, 1 equivalent), 118 mg of O-(7-azabenzo- triazol-1 -yl)-N,N,N?N?-tetramethyluronium hexafluorophosphate (HATU; 0.31 mmol, 1.3 equivalents) and 118 jtl of N,N-diisopropylethylamine (DIPEA; 0.714 mmol, 3 equivalents) were initially charged in 0.75 ml of DMF, and 37 mg of 3,5-dimethyl-1H-pyrazole-4-amine (0.33 mmol, 1.4 equivalents) were added and the mixture was stirred at RT overnight. Water was added, the reaction solution was filtered oil with suction and the product was washed with water and dried under high vacuum overnight. This gave 97 g (93% of theory) of the title compound as slightly beigecrystals.; 10649] The examples shown in Table 10 were prepared analogously to Example 48 by reacting the appropriate carboxylic acids with the appropriate commercially available amines (1-3 equivalents), HATU (1-2.5 equivalents) and N,N-diisopropylethylamine (4-6 equivalents) at RT. The reaction times were 1-3 days. Optionally, the purifications were carried out by preparative HPLC (RP1 8 column; mobile phase: acetonitrile/water gradient with addition of 0.1% trifluoroacetic acid) and/or by silica gel chromatography (mobile phase gradient: dichloromethane/methanol). The product-containing fractions were optionally concentrated, the residue was dissolved in ethyl acetate or dichloromethane/methanol and washed with a little saturated aqueous sodium bicarbonate solution, and the organic phase was then dried over sodium sulphate and filtered and the filtrate was concentrated.LC-MS (Method 2): R = 0.93 mill MS (ESpos): m/z = 480 (M + H) ?H-NMR (400 MHz, DMSO-d6): =2.30 (s, 3H), 2.50 (s, 3H), 5.18 (q, 2H),5.30 (s, 2H), 6.95 (s, 1H), 7.24 (t, 2H),7.60 (quint, 1H), 7.72 (s, 1H), 8.22 (s,1H), 8.42 (s, 1H), 10.04 (s, 1H).
  • 69
  • [ 919278-39-0 ]
  • C18H19ClN4O2S [ No CAS ]
  • C23H24F3N7O2S [ No CAS ]
YieldReaction ConditionsOperation in experiment
41% With tris-(dibenzylideneacetone)dipalladium(0); caesium carbonate; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene; In 1,4-dioxane; at 110℃; for 1h;Microwave irradiation; Inert atmosphere; Sealed tube; A solution of S-12 (0.2 g, 0.512 mmol), amine 1-(2,2,2-trifluoroethyl)-1H- pyrazol-4-amine S-14d (0.101 g, 0.615 mmol), Cs2CO3(0.332 g, 1.024 mmol) and 1,4- dioxane (3 mL) was charged into a microwave vial with stirrer bar. Argon gas was purged through septum and the reaction mixture was degassed for about 5 min. To this reaction mixture, Xantphos (0.029 g, 0.051 mmol) and Pd2(dba)3(0.047 g, 0.051 mmol) were added under inert atmosphere. This reaction mixture was purged with argon gas again for 5 min. The microwave vial was sealed and irradiated at 110 C for 1 h in CEM-microwave instrument. The reaction mixture was filtered, washed with EtOAc (50 mL) and the filtrate was concentrated under reduced pressure. The crude product was purified by column chromatography on silica gel using 0- 60% EtOAc in hexanes as eluent to afford S-16d (0.11 g, 41%, AMRI lot IN-CKB-G-20) as a brown solid. The compound wascharacterized by1H NMR analysis.1H-NMR (300 MHz, CDCl3): delta 8.45 (bs, 1H),7.89 (d, J = 8.40 Hz, 2H), 7.45 (s, 1H), 7.16 (s, 1H), 7.12 (t, J = 4.20 Hz, 2H), 6.60 (s, 1H), 6.24 (d, J = 3.90 Hz, 1H), 4.76 (d, J = 7.20 Hz, 1H), 4.68 (q, J = 8.40 Hz, 2H), 3.63- 3.54 (m, 1H), 2.28 (s, 3H), 1.21 (d, J = 6.60 Hz, 3H), 0.90- 0.78 (m, 1H), 0.50- 0.34 (m, 2H), 0.30- 0.17 (m, 2H); MS-UPLC (MM) m/z 520.2 [M + H]+.
  • 70
  • [ 919278-39-0 ]
  • 4-methyl-5-((tetrahydrofuran-2-yl)methyl)-2-(1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl)-1,2-dihydro-3H-pyrrolo[3,4-c]pyridine-3,6(5H)-dione [ No CAS ]
  • 71
  • [ 919278-39-0 ]
  • 5-(2-chloroethyl)-7-methyl-2-[1-(2,2,2-trifluoroethyl)pyrazol-4-yl]-3H-pyrrolo[3,4-c]pyridine-1,6-dione [ No CAS ]
  • 5-(2-chloroethyl)-4-methyl-2-[1-(2,2,2-trifluoroethyl)pyrazol-4-yl]-1H-pyrrolo[3,4-c]pyridine-3,6-dione [ No CAS ]
  • 72
  • [ 919278-39-0 ]
  • 5-(2,2-dimethoxyethyl)-4-methyl-2-(1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl)-1,2-dihydro-3H-pyrrolo[3,4-c]pyridine-3,6(5H)-dione [ No CAS ]
  • 73
  • [ 919278-39-0 ]
  • 5-(2,2-difluoroethyl)-4-methyl-2-[1-(2,2,2-trifluoroethyl)pyrazol-4-yl]-1H-pyrrolo[3,4-c]pyridine-3,6-dione [ No CAS ]
  • 74
  • [ 919278-39-0 ]
  • ethyl 2-[4-methyl-3,6-dioxo-2-[1-(2,2,2-trifluoroethyl)pyrazol-4-yl]-1H-pyrrolo[3,4-c]pyridin-5-yl]acetate [ No CAS ]
  • 75
  • [ 919278-39-0 ]
  • 4-methyl-5-(2-(methylthio)ethyl)-2-(1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl)-1,2-dihydro-3H-pyrrolo[3,4-c]pyridine-3,6(5H)-dione [ No CAS ]
  • 76
  • [ 919278-39-0 ]
  • 4-methyl-5-tetrahydropyran-4-yl-2-[1-(2,2,2-trifluoroethyl)pyrazol-4-yl]-1H-pyrrolo[3,4-c]pyridine-3,6-dione [ No CAS ]
  • 77
  • [ 919278-39-0 ]
  • 4-methyl-5-((methylsulfonyl)methyl)-2-(1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl)-1,2-dihydro-3H-pyrrolo[3,4-c]pyridine-3,6(5H)-dione [ No CAS ]
  • 78
  • [ 919278-39-0 ]
  • 5-(3-furyl)-4-methyl-2-[1-(2,2,2-trifluoroethyl)pyrazol-4-yl]-1H-pyrrolo[3,4-c]pyridine-3,6-dione [ No CAS ]
  • 79
  • [ 919278-39-0 ]
  • 4-methyl-5-(spiro[3.3]heptan-2-yl)-2-(1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl)-1,2-dihydro-3H-pyrrolo[3,4-c]pyridine-3,6(5H)-dione [ No CAS ]
  • 80
  • [ 919278-39-0 ]
  • 4-methyl-5-(1-methyl-1H-pyrazol-4-yl)-2-(1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl)-1,2-dihydro-3H-pyrrolo[3,4-c]pyridine-3,6(5H)-dione [ No CAS ]
  • 81
  • [ 919278-39-0 ]
  • 5-(4-fluorophenyl)-4-methyl-2-[1-(2,2,2-trifluoroethyl)pyrazol-4-yl]-1H-pyrrolo[3,4-c]pyridine-3,6-dione [ No CAS ]
  • 82
  • [ 919278-39-0 ]
  • 4-methyl-5-[(2R)-2-phenylcyclopropyl]-2-[1-(2,2,2-trifluoroethyl)pyrazol-4-yl]-1Hpyrrolo[3,4-c]pyridine-3,6-dione [ No CAS ]
  • 83
  • [ 919278-39-0 ]
  • C13H11F3N4O2 [ No CAS ]
  • 84
  • [ 919278-39-0 ]
  • [ 3939-12-6 ]
  • 5-(aminomethyl)-N-(1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl)pyridin-2-amine [ No CAS ]
  • 85
  • [ 919278-39-0 ]
  • [ 3939-12-6 ]
  • [ 1637587-14-4 ]
YieldReaction ConditionsOperation in experiment
With potassium carbonate; Step 1. 6-((1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl)amino)nicotinonitrile A mixture of <strong>[3939-12-6]6-fluoropyridine-3-carbonitrile</strong> (680 mg, 5.569 mmol), 1-(2,2,2-trifluoroethyl)pyrazol-4-amine (895 mg, 5.420 mmol), and potassium carbonate (1.74 g, 12.6 mmol) were taken into 10 ml of DMF and microwaved for 30 minutes at 160 C. The reaction was poured into water and extracted with ethyl acetate (3*50 mL). The combined organic extracts were washed with water (2*20 mL) and brine (1*20 mL), and dried over anhydrous sodium sulfate and concentrated in vacuo to provide the title product, wt. 1.4 g; ESMS (M+1)=268.01.
  • 86
  • [ 919278-39-0 ]
  • 1-(2,2,2-trifluoroethyl)-1H-pyrazole-4-sulfonyl chloride [ No CAS ]
YieldReaction ConditionsOperation in experiment
16% A mixture of conc HCl (1.9 mL) in water (1.3 mL) and acetonitrile (6.5 mL) was cooled to -10 C (acetone/dry ice bath) and treated with a solution of sodium nitrite (426 mg, 6.18 mmol) in water (0.7 mL) dropwise, maintaining internal temperature below 0 C. A yellow solution formed which was stirred for 10 minutes and then treated at 0 C over 15 minutes with a solution of <strong>[919278-39-0]1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-amine</strong> (850 mg, 5.15 mmol) in MeCN (6.5 mL), which was pre-cooled to 0 C. The resulting reaction mixture was stirred at 0 C for 45 minutes. Cold acetic acid (2.6 mL), copper(II) chloride (346 mg, 2.57 mmol) and copper(I) chloride (25.5 mg, 0.257 mmol) were sequentially added to the reaction mixture. Then the reaction mixture was purged with sulfur dioxide gas for 70 minutes at 0 C. The reaction mixture was diluted with water (15 mL) and extracted with EtOAc (3 x 30 mL), then dried (MgSO4), filtered and concentrated to dryness to give a brown paste. The crude product was purified by chromatography on silica gel (40 g column, 0-50% DCM/isohexane) to afford the title compound (420 mg, 16 %) as a clear yellow oil. 1H NMR (Chloroform-d) d 8.20 (s, 1H), 8.06 (s, 1H), 4.81 (q, J = 8.1 Hz, 2H).
  • 87
  • [ 919278-39-0 ]
  • 1-(2,2,2-trifluoroethyl)-1H-pyrazole-4-sulfonamid [ No CAS ]
  • 88
  • [ 919278-39-0 ]
  • N-((4-chloro-2,6-diisopropylphenyl)carbamoyl)-1-(2,2,2-trifluoroethyl)-1H-pyrazole-4-sulfonamide [ No CAS ]
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