Selective Ruthenium-Catalyzed Hydrochlorination of Alkynes: One-Step Synthesis of Vinylchlorides
作者:Sylvie Dérien、Hubert Klein、Christian Bruneau
DOI:10.1002/anie.201505144
日期:2015.10.5
direct and selective alkyne hydrochlorination is reported and leads to vinylchlorides in excellent yields with atom economy. The reaction proceeds at room temperature from terminal alkynes and provides a variety of chloroalkenes. Only the regioisomer resulting from the formal Markovnikov addition is selectively formed. Mechanistic studies show the stereoselective syn addition of HCl to alkynes at room
据报道,空前的钌催化的直接和选择性炔烃氢氯化反应可以使氯乙烯以极佳的收率与原子经济性结合。反应在室温下从末端炔烃开始进行,并提供各种氯代烯烃。仅选择性地形成由正式的马尔科夫尼科夫加成产生的区域异构体。机理研究表明,室温下将HCl立体选择性合成HCl到炔烃中,并表明氯氢化Ru IV类物质是反应的关键中间体。