反应详情

Benzenesulphonamide (9.4 g, 60 mmol), 3-nitrobenzoic acid (10.0 g, 60 mmol), 4-dimethylaminopyridine (7.32 g, 60 mmol) and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (11.48 g, 60 mmol) were stirred in anhydrous dichloromethane (400 ml) for 2 hours. The reaction mixture was extracted with 1M sodium hydroxide solution (300 ml), aqueous separated then re-acidified to pH=3 with 5M hydrochloric acid. 3-Nitro-(phenylsulphonylaminocarbonyl)benzene was isolated as a colourless solid (16.0 g, 87%), mp 186°-188° C.

1. extractionThe reaction mixture was extracted with 1M sodium hydroxide solution (300 ml)
2. customaqueous separated