Synthesis of Functionalized Furans via Chemoselective Reduction/Wittig Reaction Using Catalytic Triethylamine and Phosphine
作者:Chia-Jui Lee、Tzu-Hsiu Chang、Jhen-Kuei Yu、Ganapuram Madhusudhan Reddy、Ming-Yu Hsiao、Wenwei Lin
DOI:10.1021/acs.orglett.6b01781
日期:2016.8.5
An efficient protocol for the synthesis of highly functionalized furans via intramolecular Wittig reaction has been developed using catalytic amounts of phosphine and triethylamine. Silyl chloride served as the initial promoter to activate the phosphine oxide. Reduction of the activated phosphine oxide by hydrosilane resulted in generation of phosphine, while decomposition of Et3N·HCl resulted in regeneration
已经开发了使用催化量的膦和三乙胺通过分子内Wittig反应合成高度官能化的呋喃的有效方案。甲硅烷基氯用作活化氧化膦的初始促进剂。氢硅烷还原活化的氧化膦导致生成膦,而Et 3 N·HCl的分解导致碱的再生,从而介导了叶绿素磷的形成。值得注意的是,原位生成的副产物Et 3 N·HCl也催化氧化膦的还原。