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Chemical Structure| 92914-74-4 Chemical Structure| 92914-74-4

Structure of 92914-74-4

Chemical Structure| 92914-74-4

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Product Details of [ 92914-74-4 ]

CAS No. :92914-74-4
Formula : C6H5N3O
M.W : 135.12
SMILES Code : NC1=NOC2=C1C=CC=N2
MDL No. :MFCD04117798
InChI Key :NIHLEQFZWNKMEY-UHFFFAOYSA-N
Pubchem ID :2763697

Safety of [ 92914-74-4 ]

GHS Pictogram:
Signal Word:Danger
Hazard Statements:H301-H319
Precautionary Statements:P264-P270-P280-P301+P310-P305+P351+P338-P337+P313
Class:6.1
UN#:2811
Packing Group:

Computational Chemistry of [ 92914-74-4 ] Show Less

Physicochemical Properties

Num. heavy atoms 10
Num. arom. heavy atoms 9
Fraction Csp3 0.0
Num. rotatable bonds 0
Num. H-bond acceptors 3.0
Num. H-bond donors 1.0
Molar Refractivity 36.21
TPSA ?

Topological Polar Surface Area: Calculated from
Ertl P. et al. 2000 J. Med. Chem.

64.94 Ų

Lipophilicity

Log Po/w (iLOGP)?

iLOGP: in-house physics-based method implemented from
Daina A et al. 2014 J. Chem. Inf. Model.

1.09
Log Po/w (XLOGP3)?

XLOGP3: Atomistic and knowledge-based method calculated by
XLOGP program, version 3.2.2, courtesy of CCBG, Shanghai Institute of Organic Chemistry

0.62
Log Po/w (WLOGP)?

WLOGP: Atomistic method implemented from
Wildman SA and Crippen GM. 1999 J. Chem. Inf. Model.

0.81
Log Po/w (MLOGP)?

MLOGP: Topological method implemented from
Moriguchi I. et al. 1992 Chem. Pharm. Bull.
Moriguchi I. et al. 1994 Chem. Pharm. Bull.
Lipinski PA. et al. 2001 Adv. Drug. Deliv. Rev.

0.39
Log Po/w (SILICOS-IT)?

SILICOS-IT: Hybrid fragmental/topological method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

0.75
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

0.73

Water Solubility

Log S (ESOL):?

ESOL: Topological method implemented from
Delaney JS. 2004 J. Chem. Inf. Model.

-1.73
Solubility 2.49 mg/ml ; 0.0184 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Very soluble
Log S (Ali)?

Ali: Topological method implemented from
Ali J. et al. 2012 J. Chem. Inf. Model.

-1.56
Solubility 3.74 mg/ml ; 0.0276 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Very soluble
Log S (SILICOS-IT)?

SILICOS-IT: Fragmental method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

-2.15
Solubility 0.954 mg/ml ; 0.00706 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble

Pharmacokinetics

GI absorption?

Gatrointestinal absorption: according to the white of the BOILED-Egg

High
BBB permeant?

BBB permeation: according to the yolk of the BOILED-Egg

No
P-gp substrate?

P-glycoprotein substrate: SVM model built on 1033 molecules (training set)
and tested on 415 molecules (test set)
10-fold CV: ACC=0.72 / AUC=0.77
External: ACC=0.88 / AUC=0.94

No
CYP1A2 inhibitor?

Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.83 / AUC=0.90
External: ACC=0.84 / AUC=0.91

Yes
CYP2C19 inhibitor?

Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.80 / AUC=0.86
External: ACC=0.80 / AUC=0.87

No
CYP2C9 inhibitor?

Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set)
and tested on 2075 molecules (test set)
10-fold CV: ACC=0.78 / AUC=0.85
External: ACC=0.71 / AUC=0.81

No
CYP2D6 inhibitor?

Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set)
and tested on 1068 molecules (test set)
10-fold CV: ACC=0.79 / AUC=0.85
External: ACC=0.81 / AUC=0.87

No
CYP3A4 inhibitor?

Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set)
and tested on 2579 molecules (test set)
10-fold CV: ACC=0.77 / AUC=0.85
External: ACC=0.78 / AUC=0.86

No
Log Kp (skin permeation)?

Skin permeation: QSPR model implemented from
Potts RO and Guy RH. 1992 Pharm. Res.

-6.68 cm/s

Druglikeness

Lipinski?

Lipinski (Pfizer) filter: implemented from
Lipinski CA. et al. 2001 Adv. Drug Deliv. Rev.
MW ≤ 500
MLOGP ≤ 4.15
N or O ≤ 10
NH or OH ≤ 5

0.0
Ghose?

Ghose filter: implemented from
Ghose AK. et al. 1999 J. Comb. Chem.
160 ≤ MW ≤ 480
-0.4 ≤ WLOGP ≤ 5.6
40 ≤ MR ≤ 130
20 ≤ atoms ≤ 70

None
Veber?

Veber (GSK) filter: implemented from
Veber DF. et al. 2002 J. Med. Chem.
Rotatable bonds ≤ 10
TPSA ≤ 140

0.0
Egan?

Egan (Pharmacia) filter: implemented from
Egan WJ. et al. 2000 J. Med. Chem.
WLOGP ≤ 5.88
TPSA ≤ 131.6

0.0
Muegge?

Muegge (Bayer) filter: implemented from
Muegge I. et al. 2001 J. Med. Chem.
200 ≤ MW ≤ 600
-2 ≤ XLOGP ≤ 5
TPSA ≤ 150
Num. rings ≤ 7
Num. carbon > 4
Num. heteroatoms > 1
Num. rotatable bonds ≤ 15
H-bond acc. ≤ 10
H-bond don. ≤ 5

1.0
Bioavailability Score?

Abbott Bioavailability Score: Probability of F > 10% in rat
implemented from
Martin YC. 2005 J. Med. Chem.

0.55

Medicinal Chemistry

PAINS?

Pan Assay Interference Structures: implemented from
Baell JB. & Holloway GA. 2010 J. Med. Chem.

0.0 alert
Brenk?

Structural Alert: implemented from
Brenk R. et al. 2008 ChemMedChem

0.0 alert: heavy_metal
Leadlikeness?

Leadlikeness: implemented from
Teague SJ. 1999 Angew. Chem. Int. Ed.
250 ≤ MW ≤ 350
XLOGP ≤ 3.5
Num. rotatable bonds ≤ 7

No; 1 violation:MW<1.0
Synthetic accessibility?

Synthetic accessibility score: from 1 (very easy) to 10 (very difficult)
based on 1024 fragmental contributions (FP2) modulated by size and complexity penaties,
trained on 12'782'590 molecules and tested on 40 external molecules (r2 = 0.94)

2.57

Application In Synthesis of [ 92914-74-4 ]

* 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 [ 92914-74-4 ]

[ 92914-74-4 ] Synthesis Path-Downstream   1~35

  • 1
  • [ 89284-61-7 ]
  • [ 92914-74-4 ]
  • 2
  • [ 563-76-8 ]
  • [ 92914-74-4 ]
  • 3-(2-bromopropionylamino)isoxazolo[5,4-b]pyridine [ No CAS ]
  • 3
  • [ 455-19-6 ]
  • [ 92914-74-4 ]
  • 3-(4-trifluoromethyl-benz-(Z)-ylidene)aminoisoxazolo[5,4-b]pyridine [ No CAS ]
  • 5
  • [ 15018-06-1 ]
  • [ 92914-74-4 ]
  • [ 753004-48-7 ]
  • 6
  • 2-chloropropionyl bromide [ No CAS ]
  • [ 92914-74-4 ]
  • 3-(2-chloropropionylamino)isoxazolo[5,4-b]pyridine [ No CAS ]
  • 7
  • [ 104-88-1 ]
  • [ 92914-74-4 ]
  • 3-(4-chlorobenz-(Z)-ylidene)aminoisoxazolo[5,4-b]pyridine [ No CAS ]
  • 8
  • [ 86-81-7 ]
  • [ 92914-74-4 ]
  • 3-(3,4,5-trimethoxybenz-(Z)-ylidene)aminoisoxazolo[5,4-b]pyridine [ No CAS ]
  • 9
  • [ 4521-61-3 ]
  • [ 92914-74-4 ]
  • 3-(3,4,5-trimethoxybenzoylamino)isoxazolo[5,4-b]pyridine [ No CAS ]
  • 10
  • [ 123-11-5 ]
  • [ 92914-74-4 ]
  • 3-(p-anis-(Z)-ylidene)aminoisoxazolo[5,4-b]pyridine [ No CAS ]
  • 11
  • [ 122-01-0 ]
  • [ 92914-74-4 ]
  • 3-(4-chlorobenzoylamino)isoxazolo[5,4-b]pyridine [ No CAS ]
YieldReaction ConditionsOperation in experiment
70% With pyridine; In tetrahydrofuran; at 60 - 65℃; for 0.25h;Microwave irradiation; General procedure: To a solution of <strong>[92914-74-4]3-aminoisoxazolo[5,4-b]pyridine</strong>(1) (1.35 g, 0.01 mol) in tetrahydrofurane (100mL) a few drops of pyridine and benzoyl chloride or4-bromobenzoyl chloride or 4-chlorobenzoyl chloridewas added. The reaction mixture was heatedunder reflux while being stirred in the microwavereactor in an aluminum bath at 60-65OC for 15 min.(3 5 min. with 5 min. breaks) at microwave powerP = 240 W. The solvent was removed under reducedpressure. The residue obtained was triturated withwater, filtered, dried and crystallized from ethanol.
  • 12
  • [ 100-07-2 ]
  • [ 92914-74-4 ]
  • 3-(4-methoxybenzoylamino)isoxazolo[5,4-b]pyridine [ No CAS ]
  • 13
  • [ 122-04-3 ]
  • [ 92914-74-4 ]
  • 3-(4-nitrobenzoylamino)isoxazolo[5,4-b]pyridine [ No CAS ]
  • 14
  • [ 120-14-9 ]
  • [ 92914-74-4 ]
  • 3-(veratr-(Z)-ylidene)aminoisoxazolo[5,4-b]pyridine [ No CAS ]
  • 15
  • [ 92914-74-4 ]
  • [ 75-36-5 ]
  • 3-acetylaminoisoxazolo[5,4-b]pyridine [ No CAS ]
  • 16
  • [ 92914-74-4 ]
  • [ 102-92-1 ]
  • (E)-3-cinnamoylaminoisoxazolo[5,4-b]pyridine [ No CAS ]
  • 17
  • [ 92914-74-4 ]
  • [ 625-36-5 ]
  • 3,4-dihydropyrido[2,3:5,4]isoxazolo[2,3-a]pyrimidino-2-one [ No CAS ]
  • 18
  • [ 92914-74-4 ]
  • [ 4635-59-0 ]
  • [ 753004-52-3 ]
  • 19
  • [ 468068-58-8 ]
  • [ 92914-74-4 ]
  • 20
  • [ 92914-74-4 ]
  • [ 99-33-2 ]
  • 3-(3,5-dinitrobenzoylamino)isoxazolo[5,4-b]pyridine [ No CAS ]
  • 21
  • [ 92914-74-4 ]
  • 3-(2-pyrrolidinon-1-yl)isoxazolo[5,4-b]pyridine [ No CAS ]
  • 22
  • [ 92914-74-4 ]
  • 3-(N-diethylamino)acetylaminoisoxazolo[5,4-b]pyridine [ No CAS ]
  • 23
  • [ 92914-74-4 ]
  • 3-morpholino-acetylaminoisoxazolo[5,4-b]pyridine [ No CAS ]
  • 24
  • [ 92914-74-4 ]
  • 3-(N-methylpiperazino)acetylaminoisoxazolo[5,4-b]pyridine [ No CAS ]
  • 25
  • [ 92914-74-4 ]
  • [ 17341-93-4 ]
  • [ 887624-15-9 ]
YieldReaction ConditionsOperation in experiment
58.8% With pyridine; In tetrahydrofuran; at 0 - 20℃; for 2h; Example 38; N-Isoxazolo[5,4-b]pyridin-3-yl-4-(3-phenyl-1,2,4-thiadiazol-5-yl)piperazine-1-carboxamide; (1) Bis(2,2,2-trichloroethyl) isoxazolo[5,4-b]pyridin-3-ylimidodicarbonate; To a solution of <strong>[92914-74-4]isoxazolo[5,4-b]pyridin-3-ylamine</strong> (2.00 g, 14.8 mmol) and pyridine (4.79 ml, 59.2 mmol) in tetrahydrofuran (40 ml) was added, under ice-cooling, 2,2,2-trichloroethyl chlorocarbonate (5.11 ml, 37.1 mmol), and the mixture was stirred at room temperature for 2 hours. The reaction mixture was poured to water and extracted with ethyl acetate. The extract was washed with water and dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure, and hexane was added to the residue. The precipitated solid was separated by filtration to yield 4.23 g (58.8%) of the desired product. 1H-NMR (CDCl3) delta; 4.83 (4H, s), 7.43 - 7.47 (1H, m), 8.06 - 8.09 (1H, m), 8.70- 8.73 (1H, m).
  • 26
  • [ 546-88-3 ]
  • [ 3939-13-7 ]
  • [ 92914-74-4 ]
YieldReaction ConditionsOperation in experiment
28% Synthesis of intermediate VX001: Isoxazolo[5,4-b]pyridin-3-amine 909 mg (8.1 mmol) of KO-t-Bu were added, with vigorous stirring, to a suspension of 668 mg (8.9 mmol) of acethydroxamic acid in DMF (20 ml), and the mixture was stirred for 30 min at RT. 990 mg (8.1 mmol) of 2-fluoro-nicotinonitrile were then added, and stirring was carried out for a further 5 h at 50 C. The mixture was then extracted with EA and the organic phase was dried over Na2SO4, filtered and concentrated in vacuo. CC (hexane/EA 7:3) of the residue yielded 305 mg (2.3 mmol, 28%) of isoxazolo[5,4-b]pyridin-3-amine.
  • 27
  • [ 4021-50-5 ]
  • [ 92914-74-4 ]
  • [ 1242515-20-3 ]
YieldReaction ConditionsOperation in experiment
58% With triethylsilane; trifluoroacetic acid; In dichloromethane; at 20 - 60℃; Synthesis of exemplary compound 2: N-(4-(Trifluoromethylthio)benzyl)-<strong>[92914-74-4]isoxazolo[5,4-b]pyridin-3-amine</strong> 454 mg (2.2 mmol) of 4-(trifluoromethylthio)benzaldehyde were added to a solution of 270 mg (2.0 mmol) of <strong>[92914-74-4]isoxazolo[5,4-b]pyridin-3-amine</strong> (intermediate VX001) in DCM (20 ml), and the mixture was stirred for 1 h at RT. 958 mul (6.0 mmol) of triethylsilane and 446 mul (6.0 mmol) of TFA were then added, and the reaction solution was stirred for 3 d at 60 C. After cooling to RT, the mixture was rendered basic with a sat. aq. NaHCO3 soln. The phases were separated, and the aqueous phase was again extracted with DCM. The combined organic phases were dried over Na2SO4, filtered and concentrated in vacuo. CC (EA/hexane 7:3) of the residue yielded 373 mg (1.1 mmol, 58%) of N-(4-trifluoromethylthio)benzyp<strong>[92914-74-4]isoxazolo[5,4-b]pyridin-3-amine</strong>. MS: m/z 326.0 [M+H]+.
  • 28
  • [ 713-67-7 ]
  • [ 92914-74-4 ]
  • [ 1242515-23-6 ]
YieldReaction ConditionsOperation in experiment
48% With triethylsilane; trifluoroacetic acid; In dichloromethane; at 20 - 60℃; Synthesis of exemplary compound 5: N-(1-(4-(Trifluoromethylthio)phenyl)-ethyp<strong>[92914-74-4]isoxazolo[5,4-b]pyridin-3-amine</strong> 484 mg (2.2 mmol) of 4'-(trifluoromethylthio)acetophenone were added to a solution of 270 mg (2.0 mmol) of <strong>[92914-74-4]isoxazolo[5,4-b]pyridin-3-amine</strong> (intermediate VX001) in DCM (20 ml), and the mixture was stirred for 1 h at RT. 958 mul (6.0 mmol) of triethylsilane and 446 mul (6.0 mmol) of TFA were then added, and the reaction solution was stirred for 7 d at 60 C. After cooling to RT, the mixture was rendered basic with a sat. aq. NaHCO3 soln. The phases were separated, and the aqueous phase was again extracted with DCM. The combined organic phases were dried over Na2SO4, filtered and concentrated in vacuo. CC (EA/hexane 1:1) of the residue yielded 328 mg (1.0 mmol, 48%) of N-(1-(4-(trifluoromethylthio)phenyl)ethyl)-<strong>[92914-74-4]isoxazolo[5,4-b]pyridin-3-amine</strong>. MS: m/z 340.1 [M+H]+.
  • 29
  • [ 92914-74-4 ]
  • [ 1230019-07-4 ]
  • 30
  • [ 92914-74-4 ]
  • [ 1885-14-9 ]
  • [ 1229383-70-3 ]
  • 31
  • [ 1417917-81-7 ]
  • [ 92914-74-4 ]
  • [ 1417917-58-8 ]
YieldReaction ConditionsOperation in experiment
23.9 mg With N-ethyl-N,N-diisopropylamine; HATU; In dichloromethane; at 20 - 60℃; for 73h; General procedure: A mixture of 500 mg of 76.5% pure 2-(3-(4-(4-methoxybenzoyl)piperidin-1-yl)-2-oxopyrrolidin-1-yl)acetic acid (382 mg, 1.061 mmol) and 5,6-dihydrothiazolo[2,3-c][1,2,4]triazol-3-amine hydrobromide (237 mg, 1.061 mmol) was stirred in diisopropylethylamine (0.741 mL, 549 mg, 4.25 mmol) and dichloromethane (10 mL) before addition of HATU reagent (444 mg, 1.161 mmol). The reaction was stirred over 45 hours at room temperature. A small amount of off-white solid was removed by filtration. The filtrate was eluted through a silica gel column with 0 to 15% methanol/dichloromethane, then 15% to 30%, followed by 30%. The fractions containing contaminated product were concentrated down and eluted through a second silica gel column with 5% to 12% methanol. dichloromethane gradient followed by 12% to afford the title compound (177 mg) as a white solid. Calculated mass for C23H28N6O4S = 484.57. HR-MS [m/z, (M+H)+] = 485.1956. HPLC retention time = 2.73 minutes (Agilent 1100 HPLC system; 3.0 x 100 nm 3 um C18 column; flow rate of 1.0 mL /min; gradient of 5-95% acetonitrile / water with 0.1% formic acid over 10 minutes). 1H NMR (400 MHz, DMSO-d6) ppm 11.06 (br s, 1 H), 7.94 (d, J=9.09 Hz, 2 H), 7.03 (d, J=8.59 Hz, 2 H), 3.92 - 4.21 (m, 6 H), 3.83 (s, 3 H), 3.39 - 3.51 (m, 1 H), 3.21 - 3.37 (m, 3 H), 2.99 (d, J=1 3.14 Hz, 1 H), 2.64-2.84 (m, 2 H), 2.28- 2.42 (m, 1 H), 2.03- 2.18 (m, 1 H), 1.85-2.02 (m, 1 H), 1.65 - 1.78 (m, 2 H), 1.44 - 1 .60 (m, 2 H). Following the general procedure of Example 32, the title compound (23.9 mg) was prepared from <strong>[92914-74-4]isoxazolo[5,4-b]pyridin-3-amine</strong> (100 mg, 0.740 mmol). The reaction was run 1 hour at room temperature and 72 hours at 60C before workup and purification. Calculated Mass for C25H27N5O5 = 477.51. HR-MS [m/z, (M+H)+] = 478.2094. HPLC retention time = 2.68 minutes (Agilent 1100 HPLC system; 3.0 x 100 nm 3 um C18 column; flow rate of 1.0 mL / min; gradient of 5-95% acetonitrile / water with 0.1% ammonium formate over 10 minutes). 1H NMR (400 MHz, DMSO-d6) delta ppm 12.11-12.25 (br. 5, 1 H), 8.18 (dd, J=7.07, 2.53 Hz, 1 H), 7.96 (d, J=8.59 Hz, 2 H), 7.62 - 7.67 (m, 1 H), 7.04 (d, J=8.59 Hz, 2 H), 6.36 (t, J=6.82 Hz, 1 H), 4.73 - 4.85 (m, 2 H), 3.84 (s, 3 H), 3.38-3.54 (m, 3 H), 3.29 - 3.31 (m, 2 H), 2.98-3.05 (m, 1 H), 2.77-2.82 (m, 1 H), 2.35 - 2.44 (m, 1 H), 2.13 - 2.24 (m, 1 H), 1.97- 2.05 (m, 1 H), 1.68- 1.79 (m, 2 H), 1.47 - 1.63(m, 2 H).
  • 32
  • [ 92914-74-4 ]
  • [ 98-68-0 ]
  • N-isoxazolo[5,4-b]pyridin-3-yl-4-methoxybenzenesulfonamide [ No CAS ]
YieldReaction ConditionsOperation in experiment
76% With pyridine; In tetrahydrofuran; at 60 - 65℃; for 0.25h;Microwave irradiation; General procedure: To a solution of <strong>[92914-74-4]3-aminoisoxazolo[5,4-b]pyridine</strong>(1) (1.35 g, 0.01 mol) in 100 mL of tetrahydrofurane tetrahydrofurane,a few drops of anhydrous pyridine and 0.01mol of the appropriate arylsulfonyl chlorides: benzene-,4-bromobenzene-, 4-chlorobenzene-, ptoluene-and 4-methoxybenzenesulfonyl chlorideswere added. The reaction mixture was heated underreflux while being stirred in the microwave reactorin an aluminum bath at 60-65OC for 15 min (3 5min with 5 min breaks) at microwave power P = 240W. The solvent was evaporated under vacuum andthe residue obtained was triturated with water, filtered,dried and crystallized from ethanol.
  • 33
  • [ 92914-74-4 ]
  • [ 98-09-9 ]
  • N-isoxazolo[5,4-b]pyridin-3-yl-benzenesulfonamide [ No CAS ]
YieldReaction ConditionsOperation in experiment
75% With pyridine; In tetrahydrofuran; at 60 - 65℃; for 0.25h;Microwave irradiation; General procedure: To a solution of <strong>[92914-74-4]3-aminoisoxazolo[5,4-b]pyridine</strong>(1) (1.35 g, 0.01 mol) in 100 mL of tetrahydrofurane tetrahydrofurane,a few drops of anhydrous pyridine and 0.01mol of the appropriate arylsulfonyl chlorides: benzene-,4-bromobenzene-, 4-chlorobenzene-, ptoluene-and 4-methoxybenzenesulfonyl chlorideswere added. The reaction mixture was heated underreflux while being stirred in the microwave reactorin an aluminum bath at 60-65OC for 15 min (3 5min with 5 min breaks) at microwave power P = 240W. The solvent was evaporated under vacuum andthe residue obtained was triturated with water, filtered,dried and crystallized from ethanol.
  • 34
  • [ 92914-74-4 ]
  • [ 98-09-9 ]
  • N-(isoxazolo[5,4-b]pyridin-3-yl-)-N-(phenylsulfonyl)benzenesulfonamide [ No CAS ]
YieldReaction ConditionsOperation in experiment
82% With pyridine; In tetrahydrofuran; at 60 - 65℃; for 0.25h;Microwave irradiation; General procedure: To a solution of <strong>[92914-74-4]3-aminoisoxazolo[5,4-b]pyridine</strong>(1) (1.35 g, 0.01 mol) in 100 mL of tetrahydrofurane,a few drops of anhydrous pyridine and 0.02mol of the appropriate arylsulfonyl chlorides: benzene-,4-bromobenzene-, 4-chlorobenzene- and 4-methylbenzenesulfonyl chlorides were added. Thereaction mixture was heated under reflux whilebeing stirred in the microwave reactor in an aluminumbath at 60-65OC for 15 min (3 5 min with5 min breaks) at microwave power P = 240 W. Thesolvent was evaporated under vacuum and theresidue obtained was triturated with water, filtered,dried and recrystallized from ethanol.
  • 35
  • [ 92914-74-4 ]
  • [ 98-58-8 ]
  • 4-bromo-N-[(4-bromophenyl)sulfonyl]-N-(isoxazolo[5,4-b]pyridin-3-yl-)benzenesulfonamide [ No CAS ]
YieldReaction ConditionsOperation in experiment
70% With pyridine; In tetrahydrofuran; at 60 - 65℃; for 0.25h;Microwave irradiation; General procedure: To a solution of <strong>[92914-74-4]3-aminoisoxazolo[5,4-b]pyridine</strong>(1) (1.35 g, 0.01 mol) in 100 mL of tetrahydrofurane,a few drops of anhydrous pyridine and 0.02mol of the appropriate arylsulfonyl chlorides: benzene-,4-bromobenzene-, 4-chlorobenzene- and 4-methylbenzenesulfonyl chlorides were added. Thereaction mixture was heated under reflux whilebeing stirred in the microwave reactor in an aluminumbath at 60-65OC for 15 min (3 5 min with5 min breaks) at microwave power P = 240 W. Thesolvent was evaporated under vacuum and theresidue obtained was triturated with water, filtered,dried and recrystallized from ethanol.
 

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Related Functional Groups of
[ 92914-74-4 ]

Amines

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[ 92914-74-4 ]

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