A Base‐Promoted Tandem Reaction of 3‐(1‐Alkynyl)chromones with 1,3‐Dicarbonyl Compounds: An Efficient Approach to Functional Xanthones

Abstract

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).