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
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页码：961 / 962
页数：2
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