A Base-Promoted Tandem Reaction of 3-(1-Alkynyl)chromones with 1,3-Dicarbonyl Compounds: An Efficient Approach to Functional Xanthones
作者:Lizhi Zhao、Fuchun Xie、Gang Cheng、Youhong Hu
DOI:10.1002/anie.200902618
日期:2009.8.17
No need for a transition‐metal catalyst is characteristic for the tandem process presented herein to obtain functionalized xanthones. The sequence involves multiple reactions, such as Michael addition‐elimination/cyclization/1,2‐addition/elimination reactions (see scheme).
此处介绍的用于获得官能化氧杂蒽的串联方法的特征是不需要过渡金属催化剂。该序列涉及多个反应,例如迈克尔加成-消除/环化/ 1,2-加成/消除反应(请参阅方案)。