Two methods are presented for the synthesis of the title compounds starting from cyclobutenediones: an alkoxide substitution approach and a Staudinger reaction. Unsaturated lithiumorganyls may be added to the remaining carbonyl group and on heating lead to ring enlargement in a cascading process. 4-Alkenyl or 4-aryl derivatives yield aminophenols or -naphthols; 4-alkynyl compounds give cyclopenta-annulated quinolines.
本文介绍了从
环丁烯二
酮出发合成标题化合物的两种方法:烷
氧化物取代法和施陶丁格反应。不饱和的
锂有机物可以添加到剩余的羰基上,加热后通过级联过程导致环扩大。4-
烯基或4-芳基衍
生物产生
氨基苯酚或
氨基
萘酚;4-炔基化合物则生成环戊稠合的
喹啉。