Palladium-Catalyzed Selective Generation of CO from Formic Acid for Carbonylation of Alkenes
作者:Rui Sang、Peter Kucmierczyk、Kaiwu Dong、Robert Franke、Helfried Neumann、Ralf Jackstell、Matthias Beller
DOI:10.1021/jacs.8b01123
日期:2018.4.18
A general and selective palladium-catalyzed alkoxycarbonylation of all kinds of alkenes with formic acid (HCOOH, FA) is described. Terminal, di-, tri-, and tetra-substituted including functionalized olefins are converted into linear esters with high yields and regioselectivity. Key-to-success is the use of specific palladium catalysts containing ligands with built-in base, e.g., L5. Comparison experiments
描述了各种烯烃与甲酸 (HCOOH, FA) 的通用和选择性钯催化烷氧基羰基化。包括官能化烯烃在内的末端、二、三和四取代的烯烃以高产率和区域选择性转化为直链酯。成功的关键是使用含有内置碱配体的特定钯催化剂,例如 L5。对比实验表明,该活性催化剂体系不仅有利于烯烃的异构化和羰基化,而且在温和条件下促进了 HCOOH 选择性分解为 CO。