Formal [4 + 1] cycloaddition of o-quinone methides: facile synthesis of dihydrobenzofurans
作者:Xiantao Lei、Chun-Huan Jiang、Xiaoan Wen、Qing-Long Xu、Hongbin Sun
DOI:10.1039/c4ra17003b
日期:——
An efficient and straightforward method for the rapid synthesis of 2-substituted dihydrobenzofurans has been developed via reaction of sulfur ylides with o-quinone methides (o-QMs), which were generated under mild conditions. The products could be obtained in excellent yields with various kinds of sulfur ylides.
通过硫代烷基化物与邻-醌甲基化物(o- QMs)的反应,已经开发出一种快速合成2-取代的二氢苯并呋喃的有效且直接的方法,后者在温和的条件下产生。可以用各种类型的硫酰化物以优异的产率获得产物。