On the mechanism of nucleophilic substitution of allenyl(aryl)iodine(III): Formation of propargyl cation and competition with sigmatropic rearrangement
作者:Masahito Ochiai、Michio Kida、Tadashi Okuyama
DOI:10.1016/s0040-4039(98)01276-3
日期:1998.8
The ratios of nucleophilic substitution versus [3,3] sigmatropic rearrangement for the collapse of allenyl(aryl)-iodine(III), generated from the reaction of aryliodanes with propargylsilanes in the presence of BF3Et2O in alcohols, were determined. A proposed mechanism involves generation of propargyl cations from the allenyliodine(III) via a unimolecular pathway.
亲核取代与[3,3]对于丙二烯基的崩溃(芳基) -碘(III),从aryliodanes与propargylsilanes中的BF存在下进行反应生成σ重排的比率3 Et 2 Ó醇,测定。拟议的机制涉及通过单分子途径从烯丙基碘(III)生成炔丙基阳离子。