Enantioselective Alkynylation of Isatins: A Combination of Metal Catalysis and Organocatalysis
作者:Dan Jiang、Pei Tang、Qiuyuan Tan、Zhao Yang、Ling He、Min Zhang
DOI:10.1002/chem.202003118
日期:2020.12.4
efficient and catalytic asymmetric alkynylation of isatins has been developed using a bifunctional amidophosphine‐urea/AgBF4 complex as the catalyst. By a combination of metal catalysis and organocatalysis, excellent enantioselectivities (up to 99 % ee) and good yields are achieved. A wide range of both terminal alkynes and isatins are tolerated by this new catalyst system, providing access to structurally
使用双功能酰胺基膦-尿素/ AgBF 4络合物作为催化剂,已经开发出一种高效的,高效的催化不对称的靛红炔烃。通过金属催化和有机催化的结合,可获得出色的对映选择性(最高99% ee)和良好的收率。这种新的催化剂体系可耐受各种末端炔烃和异丁烷,可高效获得具有四取代立体异构中心的结构多样的炔丙醇。