Addition of arylstannanes to alkynes giving ortho-alkenylarylstannanes catalysed cooperatively by a rhodium complex and zinc chloride†,Chemical Science

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Addition of arylstannanes to alkynes giving ortho-alkenylarylstannanes catalysed cooperatively by a rhodium complex and zinc chloride†
Chemical Science ( IF 7.6 ) Pub Date : 2018-08-17 00:00:00 , DOI: 10.1039/c8sc02459f
Jialin Ming ₁ , Qi Shi ₁ , Tamio Hayashi ₁

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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 by 1,4-migration of Rh from 2-arylalkenyl carbon to ortho-alkenylaryl carbon.

中文翻译：

在铑络合物和氯化锌的协同催化下，芳基锡烷与炔烃加成得到邻烯基芳基锡烷†

_{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。

更新日期：2018-08-17

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