3-Chlorobenzenesulphonyl chloride → N-{2-Bromo-6-methyl-3-[3-(methyloxy)phenyl]thieno[2,3-b]pyridin-4-yl}-3-chlorobenzenesulfonamide

HRID 573616Notes

Reaction equation

HRID 573616 reaction equation
[Br:1][C:2]1[S:12][C:5]2[N:6]=[C:7]([CH3:11])[CH:8]=[C:9]([NH2:10])[C:4]=2[C:3]=1[C:13]1[CH:18]=[CH:17][CH:16]=[C:15]([O:19][CH3:20])[CH:14]=1.CC(C)([O-])C.[Na+].[Cl:27][C:28]1[CH:29]=[C:30]([S:34](Cl)(=[O:36])=[O:35])[CH:31]=[CH:32][CH:33]=1>CN(C=O)C.C(OCC)(=O)C.C([O-])(O)=O.[Na+]>[Br:1][C:2]1[S:12][C:5]2=[N:6][C:7]([CH3:11])=[CH:8][C:9]([NH:10][S:34]([C:30]3[CH:31]=[CH:32][CH:33]=[C:28]([Cl:27])[CH:29]=3)(=[O:36])=[O:35])=[C:4]2[C:3]=1[C:13]1[CH:18]=[CH:17][CH:16]=[C:15]([O:19][CH3:20])[CH:14]=1

Participants

7

Reactant 3

HCID 179093-Chlorobenzenesulphonyl chlorideHCID 23676156Sodium t-butoxideHCID 683240582-Bromo-6-methyl-3-[3-(methyloxy)phenyl]thieno[2,3-b]pyridin-4-amine

Product 1

HCID 53250396N-{2-Bromo-6-methyl-3-[3-(methyloxy)phenyl]thieno[2,3-b]pyridin-4-yl}-3-chlorobenzenesulfonamideYield 64.8%

Reagents, catalysts & solvents 3

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolventHCID 516892Sodium BicarbonateSolvent

Procedure

Alternatively, to a stirred solution of 2-bromo-6-methyl-3-[3-(methyloxy)phenyl]thieno-[2,3-b]pyridin-4-amine (460 mg, 1.317 mmol) (Description 17) in DMF (10 mL) was added sodium tert-butoxide (316 mg, 3.29 mmol) and 3-chlorobenzenesulfonyl chloride (0.371 mL, 2.63 mmol). The reaction mixture was stirred at RT under nitrogen for 1 h. The reaction mixture was then diluted with ethyl acetate (25 mL) and NaHCO3 (50 mL). The organic layer was then separated and the aqueous layer re-extracted with ethyl acetate (2×20 mL). The combined organic layer was dried over Na2SO4 and the solvent concentrated in vacuo. Purification by chromatography on silica gel, eluting with a gradient of 0-50% ethyl acetate in cyclohexane, afforded the title compound (447 mg).

Workup

  1. customThe organic layer was then separated
  2. extractionthe aqueous layer re-extracted with ethyl acetate (2×20 mL)
  3. dry with materialThe combined organic layer was dried over Na2SO4
  4. concentrationthe solvent concentrated in vacuo
  5. customPurification by chromatography on silica gel
  6. washeluting with a gradient of 0-50% ethyl acetate in cyclohexane

Sources & evidence

ORD record
ord-421dbf18e545427ca7c6ec1919f6c7d1
Source dataset
uspto-grants-2015_05
Patent number
US09029545B2

Reaction notes

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