Base-Catalyzed Condensation of 2-Hydroxybenzaldehydes with α,β-Unsaturated Aldehydes - Scope and Limitations
作者:Bernhard Lesch、Jakob Toräng、Sylvia Vanderheiden、Stefan Bräse
DOI:10.1002/adsc.200404239
日期:2005.3
The base-catalyzed condensation of α,β-unsaturated carbonyl compounds with 2-hydroxybenzaldehydes yielding tetrahydroxanthones and dihydrobenzopyrans has been investigated. A novel access to highly functionalized dihydrobenzopyrans via a mild generation of the dienol of senecialdehyde and subsequent conjugated aldol reaction has been reported.
研究了α,β-不饱和羰基化合物与2-羟基苯甲醛在碱催化下的缩合反应,生成四氢黄嘌呤和二氢苯并吡喃。已经报道了通过温和地产生十二烯醛的二烯醇和随后的共轭醛醇缩合反应来新颖地获得高度官能化的二氢苯并吡喃。