反应详情

To a solution of (3-n-butylamino-4-phenoxy-5-sulfamylbenzyl)benzylamine (1.1 g; prepared as described in Example 136) in pyridine (6 ml), acetic anhydride (0.26 ml) is added and the mixture is left for 3 hours. Water (25 ml) is then added followed by concentrated hydrochloric acid (3 ml) to precipitate a semi-solid material. After recrystallization twice from aqueous ethanol, N-benzyl-N-(3-n-butylamino-4-phenoxy-5-sulfamylbenzyl)acetamide is obtained with a melting point of 75°-77° C.

1. customto precipitate a semi-solid material
2. customAfter recrystallization twice from aqueous ethanol