A GENERAL-SYNTHESIS OF CHROMENES

被引:0
|
作者
AUKRUST, IR
NOUSHABADI, M
SKATTEBOL, L
机构
关键词
SYNTHESIS; CHROMENES; ALLYLZINC REAGENTS;
D O I
暂无
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A general synthesis of chromenes, involving zinc promoted allyation of 2-hydroxyphenacyl derivatives followed by acid catalyzed cyclisation and dehydration is described. Several structurally different allylic bromides have been successfully employed. The synthesis is conveniently carried out without isolation of the intermediate benzyl alcohol derivative, and usually good overall yields are obtained. Salicyl aldehyde was successfully employed as a substrate, but precocene was not formed from 4,5-dimethoxysalicylaldehyde.
引用
收藏
页码:2167 / 2173
页数:7
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