Site-specific introduction of gold-carbenoids by intermolecular oxidation of ynamides or ynol ethers
作者:Paul W. Davies、Alex Cremonesi、Nicolas Martin
DOI:10.1039/c0cc02736g
日期:——
Ynamides and ynol ethers undergo intermolecular gold-catalysed reaction with a nucleophilic oxidant to access metal-carbenoid reactivity patterns. A site-specific oxidation/1,2-insertion cascade is used for a general access to functionalised α,β-unsaturated carboxylic acid derivatives and vinylogous carbimates.
Synthesis of α,β-Unsaturated <i>N</i>-Sulfonyl Imides through Zinc-Catalyzed Intermolecular Oxidation of <i>N</i>-Sulfonyl Ynamides
作者:Fei Pan、Chao Shu、Yi-Fan Ping、Yi-Fei Pan、Peng-Peng Ruan、Qian-Ran Fei、Long-Wu Ye
DOI:10.1021/acs.joc.5b01608
日期:2015.10.16
A novel zinc-catalyzed intermolecular oxidation of N-sulfonyl ynamides has been developed. A variety of functionalized alpha,beta-unsaturated N-sulfonyl imides are readily accessed by utilizing this approach, thus providing a viable alternative to synthetically useful alpha,beta-unsaturated imides. Importantly, the reaction is proposed to proceed by a vinyligous E2-type elimination pathway, but not metal carbene pathway.