Benzenesulfonyl chloride → 2,6-difluoro-N-(3-methoxy-1H-pyrazolo[3,4-b]pyridin-5-yl)-3-(phenylsulfonamido)benzamide

HRID 1943943Notes

Reaction equation

HRID 1943943 reaction equation
[NH2:1][C:2]1[C:3]([F:23])=[C:4]([C:19]([F:22])=[CH:20][CH:21]=1)[C:5]([NH:7][C:8]1[CH:9]=[C:10]2[C:16]([O:17][CH3:18])=[N:15][NH:14][C:11]2=[N:12][CH:13]=1)=[O:6].[C:24]1([S:30](Cl)(=[O:32])=[O:31])[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1>C(Cl)(Cl)Cl.N1C=CC=CC=1>[F:23][C:3]1[C:2]([NH:1][S:30]([C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)(=[O:32])=[O:31])=[CH:21][CH:20]=[C:19]([F:22])[C:4]=1[C:5]([NH:7][C:8]1[CH:9]=[C:10]2[C:16]([O:17][CH3:18])=[N:15][NH:14][C:11]2=[N:12][CH:13]=1)=[O:6]

Participants

5

Reactant 2

HCID 7369Benzenesulfonyl chlorideHCID 670889003-amino-2,6-difluoro-N-(3-methoxy-1H-pyrazolo[3,4-b]pyridin-5-yl)benzamide

Product 1

HCID 533133432,6-difluoro-N-(3-methoxy-1H-pyrazolo[3,4-b]pyridin-5-yl)-3-(phenylsulfonamido)benzamideYield 79%

Reagents, catalysts & solvents 2

HCID 1049PyridineCatalystHCID 6212ChloroformSolvent

Procedure

3-Amino-2,6-difluoro-N-(3-methoxy-1H-pyrazolo[3,4-b]pyridin-5-yl)benzamide (0.005 g, 0.0157 mmol) was taken up as a slurry in CHCl3 (1.0 mL). Three drops of pyridine were added, followed by the addition of benzenesulfonyl chloride (0.00600 mL, 0.0470 mmol). The slurry was stirred overnight at room temperature. The reaction mixture was concentrated and purified by silica gel chromatography to provide 2,6-difluoro-N-(3-methoxy-1H-pyrazolo[3,4-b]pyridin-5-yl)-3-(phenylsulfonamido)benzamide (5.7 mg, 79%) as a solid. 1H NMR (400 MHz, d6-DMSO) δ 12.59 (s, 1H), 11.01 (s, 1H), 10.39 (br s, 1H), 8.55 (s, 1H), 8.44 (s, 1H), 7.76-7.78 (m, 2H), 7.64-7.68 (m, 1H), 7.57-7.61 (m, 1H), 7.31-7.37 (m, 1H), 7.17-7.21 (m, 1H), 4.01 (s, 3H); m/z (APCI-neg) M−1=458.2.

Workup

  1. concentrationThe reaction mixture was concentrated
  2. custompurified by silica gel chromatography

Sources & evidence

ORD record
ord-764732c41e3a491cb7b5f7042f196b96
Source dataset
uspto-grants-2013_03
Patent number
US08394795B2

Reaction notes

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