Hydrogen cleavage by solid-phase frustrated Lewis pairs†
Abstract
We report the direct synthesis of a solid-phase frustrated Lewis pair (s-FLP) by combining a silica-supported Lewis acid (SiOB(C6F5)2, s-BCF) with a Lewis base (tri-tert-butylphosphine, tBu3P) to give [
SiOB(C6F5)2][tBu3P]. Reaction of this s-FLP with H2 under mild conditions led to heterolytic H–H bond cleavage and the formation of [
SiOB(H)(C6F5)2][tBu3PH].