Dual Gold/Silver Catalysis Involving Alkynylgold(III) Intermediates Formed by Oxidative Addition and Silver‐Catalyzed C−H Activation for the Direct Alkynylation of Cyclopropenes
作者:Yangyang Yang、Patrick Antoni、Marc Zimmer、Kohei Sekine、Florian F. Mulks、Long Hu、Lumin Zhang、Matthias Rudolph、Frank Rominger、A. Stephen K. Hashmi
DOI:10.1002/anie.201812577
日期:2019.4
While gold‐mediated synergistic catalytic processes involving transmetalations with other metals are well understood, AuI/AuIII cycles in these reactions are rarely reported. Herein a gold‐catalyzed direct alkynylation of cyclopropenes is enabled by two operating catalytic cycles, an oxidative catalytic cycle involving an alkynyl AuIII complex formed by oxidative addition and one involving a silver‐mediated
尽管众所周知金介导的与其他金属发生重金属化的协同催化过程,但很少报道这些反应中的Au I / Au III循环。在此,金的环丙烯丙烯直接烷基化反应通过两个操作催化循环实现,一个氧化催化循环涉及通过氧化加成形成的炔基Au III配合物,另一个涉及银介导的CH活化。