6-Methoxy-m-toluenesulfonyl chloride → Benzo[b]thiophene-2sulfonic acid [2-(2-methoxy-5-methylbenzenesulfonylamino)phenyl]-amide

To a solution of benzo[b]thiophene-2-sulfonic acid (2-aminophenyl)-amide (1 mmol, prepared as in Example 1) in DCM (2 mL) and pyridine (2 mL), 2-methoxy-5-methylbenzenesulfonyl chloride (1.1 mmol) was added at RT and the reaction mixture was then allowed to stir at RT overnight. The reaction mixture was then diluted with DCM (10 mL). The organic phase was washed with 10% aqueous HCl (10 mL), water (10 mL) and brine (10 mL). The organic phase was dried over anhydrous sodium sulfate and concentrated under vacuum. The residue obtained was purified by flash column chromatography eluting with DCM/EtOAc to obtain 390 mg of benzo[b]thiophene-2-sulfonic acid [2-(2-methoxy-5-methylbenzenesulfonylamino)phenyl]-amide. LC: Tr 1.25 min; MS: 489.1 (M+1)+.

1. washThe organic phase was washed with 10% aqueous HCl (10 mL), water (10 mL) and brine (10 mL)
2. dry with materialThe organic phase was dried over anhydrous sodium sulfate
3. concentrationconcentrated under vacuum
4. customThe residue obtained
5. customwas purified by flash column chromatography
6. washeluting with DCM/EtOAc

ORD record

ord-a1631ad6ce614e76885649047060fa4d

Source dataset

uspto-grants-2009_09

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07582673B2