Bis(pentafluorophenyl)borane: Synthesis, Properties, and Hydroboration Chemistry of a Highly Electrophilic Borane Reagent

摘要

Hydroboration is one of the most widely used reactions in organic synthesis. A wide variety of borane reagents have been reported such that a library of reagents exists tailored to many different chemical situations. We were interested in the elec-trophilic and potentially very reactive borane HB(C_6F_5))_2 for possible applications in generation of soluble Ziegler-Natta-type oletin polymerization catalysts. These studies revealed this borane to be an exceptionally active hydroboration reagent. In this communication we describe its synthesis, characterization, and a preliminary survey of its activity towards alkenes and alkynes.