PREFERENTIAL FORMATION OF 5-MEMBERED RINGS IN 2 CLAISEN CYCLIZATIONS

被引：0

作者：

BRANDANGE, S

LEIJONMARCK, H

NOVACIC, Z

机构：

来源：

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS | 1992年 / 07期

关键词：

D O I：

10.1039/c39920000569

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Alpha-Lithiations of the acetoxy groups of 1 and 2 lead to Claisen cyclisations in which five-membered rings are formed much faster than six-membered rings; this selectivity is opposite to that of aldol condensations.

引用

页码：569 / 570

页数：2

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