REACTIONS OF 4-(DICYANOMETHYLENE)-3-METHYL-1-PHENYL-2-PYRAZOLIN-5-ONE TOWARDS ACTIVE METHYLENE-COMPOUNDS

被引：0

作者：

METWALLY, SAM

ELNAGGAR, GM

ELEMARY, TI

机构：

来源：

LIEBIGS ANNALEN DER CHEMIE | 1991年 / 09期

关键词：

2-PYRAZOLIN-5-ONE;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The reaction of some active methylene compounds with 4-(dicyanomethylene)-3-methyl-1-phenyl-2-pyrazoline-5-one (1a) has been investigated. This reaction involves a Michael addition to afford 4-spirocyclobutenes 3 or cyclopyran-2-pyrazoline-5-ones 4, depending on the active methylene derivatives used. A possible rationalization of the reaction pathway is proposed.

引用

页码：961 / 962

页数：2