HRID1576420
反应详情
EQUATION
反应方程式
REACTANTS
反应物
PRODUCTS
生成物
AUXILIARIES
试剂、催化剂与溶剂
PROCEDURE
实验过程
A solution of 36.5 g of 3-bromo-3-(4'-fluoro-4-biphenylyl)-butyric acid ethyl ester [obtainable from 3-(4'-fluoro-4-biphenylyl)-3-hydroxybutyric acid ethyl ester and PBr3 ] and 7 g of hydrazine in 200 ml of dioxane is boiled for 2 hours and is evaporated. Working up gives 3-(4'-fluoro-4-biphenylyl)-3-methyl-pyrazolidin-5-one, m.p. 194°-196°.
WORKUP
后处理
- customis evaporated