Preparation of Organozinc Reagents via Catalyst Controlled Three-Component Coupling between Alkyne, Iodoarene, and Bis(iodozincio)methane
作者:Yukako Shimada、Zenichi Ikeda、Seijiro Matsubara
DOI:10.1021/acs.orglett.7b00917
日期:2017.7.7
Three-component coupling between an alkyne, iodoarene, and bis(iodozincio)methane yields allylic zinc with a tetrasubstituted alkene moiety in the presence of a nickel catalyst. The reaction proceeds via aryl nickelation of the alkyne and subsequent cross-coupling with bis(iodozincio)methane. Meanwhile, the same combination in the presence of a palladium and cobalt catalyst gives tetrasubstituted alkenylzinc
在
镍催化剂的存在下,
炔烃,
碘芳烃和双(
碘嗪)
甲烷之间的三组分偶联产生具有四取代烯烃部分的烯丙基
锌。该反应通过
炔烃的芳基
镍化反应和随后与双(
碘嗪)
甲烷的交叉偶联而进行。同时,在
钯和
钴催化剂存在下的相同组合产生四取代的链烯基
锌。该反应通过
钯催化的
碘代
芳烃与双(
碘并嗪)
甲烷的交叉偶联进行,然后进行
钴催化的炔的苄基
锌化反应。