HRID441859

反应详情

EQUATION

反应方程式

HRID 441859 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

PROCEDURE

实验过程

50.8 g of ethyl p-chlorobenzoylacetate (produced for example from p-chloroacetophenone, diethyl carbonate and sodium hydride with a yield of 72 %) 29 g of phenylhydrazine, 5 ml of glacial acetic acid and 150 ml of ethanol are heated in a nitrogen atmosphere for 1 hour at boiling point. After cooling in an ice bath 3-p-chlorophenyl-1-phenyl-2-pyrazoline-5-one is obtained with a yield of 84 %; F 160.5°-161.5°.

WORKUP

后处理

  1. temperatureare heated in a nitrogen atmosphere for 1 hour
  2. customis obtained with a yield of 84 %
  3. customF 160.5°-161.5°