Metal-free catalytic hydroboration of imine with pinacolborane using a pincer-type phosphorus compound: mechanistic insight and improvement of the reaction

Abstract

Imine hydroboration catalyzed by pincer-phosphorus (P) compounds occursviathe P-ligand cooperative function. The resting state is largely suppressed by introducing planar ligand framework with steric-demanding substituents, and thus improves the reaction efficiency.