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Dual Gold/Silver Catalysis Involving Alkynylgold(III) Intermediates Formed by Oxidative Addition and Silver-Catalyzed C-H Activation for the Direct Alkynylation of Cyclopropenes.

Yangyang YangPatrick AntoniMarc ZimmerKohei SekineFlorian F MulksLong HuLumin ZhangMatthias RudolphFrank RomingerA Stephen K Hashmi
Published in: Angewandte Chemie (International ed. in English) (2019)
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 C-H activation.
Keyphrases
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