反应详情

A suspension of 137 mg of 1-(2-diisopropylaminoethyl)isatin and 120 mg of 4-benzylsemicarbazide hydrochloride in 2 ml of a mixture of ethanol and water (2:1) was stirred for 11 hours at room temperature, and an aqueous sodium bicarbonate solution was added to the reaction mixture. The precipitates were collected by filtration, washed with water and recrystallized from aqueous ethanol to obtain 147 mg of (E)-1-(2-diisopropylaminoethyl)isatin 3-(4-benzylsemicarbazone). Chemical properties of the product were identical with those of the product obtained by Example 5.

1. filtrationThe precipitates were collected by filtration
2. washwashed with water
3. customrecrystallized from aqueous ethanol