A Mechanistic Alternative for the Intramolecular Hydroboration of Homoallylic Amine and Phosphine Borane Complexes
作者:Matthew Scheideman、Peter Shapland、Edwin Vedejs
DOI:10.1021/ja034655m
日期:2003.9.1
Intramolecular hydroboration is demonstrated starting from homoallylic amineboranes upon activation by iodine. The process involves a B-iodoborane complex as the intermediate and may occur via internal displacement of iodide by the alkene to generate a cationic borane-alkene pi-complex on the way to hydroboration products. The reaction can be carried out using a catalytic amount of iodine.