NOVEL HYDROBORATING AGENTS FROM SILYLAMINE-BORANES

Exhibiting a broad spectrum of hydroboration reactivities, seven (7) n ew silylamine-borane complexes (1) were efficiently prepared from dibo rane and the corresponding silylated amines (2). Most are crystalline solids which are air-stable, concentrated borane sources. AII provide convenient alternatives to other hydroborating agents, 2 undergoing co mplete hydrolysis to volatile and/or wafer soluble by-products upon aq ueous work-up, thereby greatly facilitating the isolation of the boran e-derived reaction products. (C) 1998 Elsevier Science Ltd. All rights reserved.