The reaction of arylstannanes ArSnR3 with unfunctionalised alkynes was found to proceed in the presence of a rhodium catalyst and a catalytic amount of zinc chloride to give ortho-alkenylarylstannanes with high selectivity in high yields. The catalytic cycle is very unique, consisting of three transmetalation steps, from Sn to Rh, Rh to Zn, and Zn to Sn, in addition to arylrhodation of alkyne followed
发现芳基
锡烷ArSnR 3与未官能化的
炔烃的反应在
铑催化剂和催化量的
氯化锌存在下进行,以高产率高选择性地产生邻-烯基芳基
锡烷。催化循环非常独特,包括三个
金属转移步骤,从 Sn 到 Rh、Rh 到 Zn 以及 Zn 到 Sn,此外还包括炔的芳基
铑化,然后将 Rh 从 2-芳基烯基碳 1,4-迁移到邻位碳。烯基芳基碳。