On the mechanism of nucleophilic substitution of allenyl(aryl)iodine(III): Formation of propargyl cation and competition with sigmatropic rearrangement

Autor: Michio Kida, Masahito Ochiai, Tadashi Okuyama
Rok vydání: 1998
Předmět:
Zdroj: Tetrahedron Letters. 39:6207-6210
ISSN: 0040-4039
Popis: 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 BF3Et2O in alcohols, were determined. A proposed mechanism involves generation of propargyl cations from the allenyliodine(III) via a unimolecular pathway.
Databáze: OpenAIRE