HRID223187

反应详情

EQUATION

反应方程式

HRID 223187 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

29.1 g (0.14 mol) of 6-chloroisatoic acid anhydride are stirred with 13.12 g (0.14 mol) of sarcosine in 150 ml of dimethyl sulphoxide at 110° for 1 hour. The solution obtained is concentrated and the residue is recrystallized from ethanol. There is obtained 6-chloro-3,4-dihydro-4-methyl-2H-1,4-benzodiazepine-2,5(1H)-dione of melting point 237°-238°.

WORKUP

后处理

  1. customThe solution obtained
  2. concentrationis concentrated
  3. customthe residue is recrystallized from ethanol