The sequential rhodium-catalyzed addition/lactonization reaction of organoboron derivatives to alkyl 4-hydroxy-2-alkynoates would constitute a novel methodology for the synthesis of 4-aryl/heteroaryl/vinyl-2(5H)-furanones with an excellent control of the regio- and chemoselectivity. The role played by rhodium precatalyst, ligands, reaction medium, and the feature of organoboron derivatives has been
有机
硼衍
生物与
4-羟基-2-
炔烃烷基酯的
铑相继催化加成/内酯化反应将构成一种合成4-芳基/杂芳基/
乙烯基-2(5 H)-
呋喃酮的新颖方法区域和
化学选择性。研究了
铑的预催化剂,
配体,反应介质以及有机
硼衍
生物的特征。