作者:Jia-Feng Chen、Changkun Li
DOI:10.1021/acscatal.9b05078
日期:2020.3.20
Transition-metal-catalyzed dimerization of two different terminal alkynes provides an atom-economic synthesis of valuable conjugated 1,3-enynes. Despite many catalyst systems developed, the state-of-the-art solutions are still limited to special alkynes. A practical catalyst, which could be used to cross-dimerize general aryl alkynes and aliphatic alkynes, is still highly desired. Herein we present
两种不同末端炔烃的过渡金属催化二聚反应可提供有价值的共轭1,3-烯炔的原子经济合成。尽管开发了许多催化剂系统,但最新的解决方案仍然仅限于特殊的炔烃。仍然非常需要一种实用的催化剂,该催化剂可用于使一般的芳基炔烃和脂族炔烃交叉二聚。在本文中,我们提出了在温和的反应条件下,富含土的Co(II)催化的芳基炔烃和脂族炔烃或气体乙炔的高度宝石选择性交叉二聚。可以高产率制备具有各种有用官能团的共轭1,3-烯炔。Co(OAc)2和叔丁基取代的三配体的应用对于区分炔烃在不同步骤并实现宝石选择性至关重要。