作者:Qianwei Chen、Fengchen Gao、Huiling Tang、Miao Yao、Qian Zhao、Yanhui Shi、Yanfeng Dang、Changsheng Cao
DOI:10.1021/acscatal.9b00218
日期:2019.4.5
Sonogashira coupling reaction involving C–N bond cleavage with aryltrimethylammonium triflate as an electrophilic coupling partner is described in this work. The reactions proceeded well under mild conditions with a stoichiometric ratio of alkyl, aryl, or heteroaryl acetylenes and provided yields of up to 93%. Numerous useful functional groups were tolerated under the reaction conditions. Direct amine
C(sp)–C(sp 2的协议)通过Sonogashira偶联反应形成键,涉及将C–N键与三氟甲磺酸芳基三甲基铵作为亲电偶联伴侣进行裂解。反应在温和条件下以烷基,芳基或杂芳基乙炔的化学计量比进行得很好,收率高达93%。在反应条件下容许许多有用的官能团。直接胺烷基化可以通过一锅法实现,而无需分离铵盐。该协议可以以克为单位执行。进行密度泛函理论计算以研究涉及氧化加成,炔烃配位,去质子化和还原消除的反应机理,从而产生交叉偶联产物。