作者:Somsuvra Banerjee、Shivhar B. Ambegave、Ravindra D. Mule、Beeran Senthilkumar、Nitin T. Patil
DOI:10.1021/acs.orglett.0c01596
日期:2020.6.19
By applying the “interplay” mode, which consolidates two key reactivity modes of gold catalysis, namely π-activation mode and cross-coupling mode, the first alkynylative Meyer–Schuster rearrangement is designed and successfully implemented. The current protocol gives straightforward access to enynones, a highly valuable building block, from easily available propargyl alcohol feedstocks. Control experiments
Propargylic alcohols undergo smooth deoxygenative allylation with allylsilanes in the presence of a solution of 10 mol % of copper(II) tetrafluoroborate in acetonitrile to afford the corresponding 1,5-enynes in good to high yields under mild and neutral conditions. Scandium triflate is also found to catalyze efficiently the nucleophilic substitution of propargylic alcohols with allylsilanes. (c) 2007 Elsevier Ltd. All rights reserved.