Mercury-Free Preparation and Selective Reactions of Propargyl (and Propargylic) Grignard Reagents
作者:Hukum P. Acharya、Kei Miyoshi、Yuichi Kobayashi
DOI:10.1021/ol071397f
日期:2007.8.1
ZnBr2 was found to catalyze formation of propargyl and propargylic Grignardreagents, and thus put an end to the standard method using a mercury catalyst. The Grignardreagents were submitted to addition reaction with carbonyl compounds and allylation with the cyclic monoacetate to afford the propargyl-type products selectively. Furthermore, the product from the monoacetate was transformed to an acetylene