Regioselective Ni-Catalyzed Carboxylation of Allylic and Propargylic Alcohols with Carbon Dioxide
作者:Yue-Gang Chen、Bin Shuai、Cong Ma、Xiu-Jie Zhang、Ping Fang、Tian-Sheng Mei
DOI:10.1021/acs.orglett.7b01208
日期:2017.6.2
efficient Ni-catalyzed reductive carboxylation of allylic alcohols with CO2 has been successfully developed, providing linear β,γ-unsaturated carboxylic acids as the sole regioisomer with generally high E/Z stereoselectivity. In addition, the carboxylic acids can be generated from propargylic alcohols via hydrogenation to give allylic alcohol intermediates, followed by carboxylation. A preliminary mechanistic
已成功开发了一种有效的Ni催化的烯丙基醇与CO 2的还原性羧化反应,提供线性的β,γ-不饱和羧酸作为唯一的区域异构体,具有较高的E / Z立体选择性。另外,羧酸可以由炔丙醇经氢化生成烯丙基醇中间体,然后进行羧化。初步的机械研究表明,氢化步骤是通过从水中转移氢原子产生的氢化镍中间体实现的。