Rhodium-Catalyzed Hydroalkynylation of Internal Alkynes with Silylacetylenes:An Alkynylrhodium(I) Intermediate Generated from the Hydroxorhodium(I) Complex [Rh(OH)(binap)]2

摘要

A highly selective hydroalkynylation of internal alkynes with silylacetylenes giving 1,3-enynes was realized by use of a hydroxorhodium catalyst.As a key intermediate in the catalytic cycle,an alkynylrhodium(I) complex was isolated and investigated for its structure and reactivity.