Electron-deficient cyclopropenium cations as Lewis acids in FLP chemistry

Abstract

Cyclopropenium cations incorporating electron deficient substituents are shown be Lewis acidic despite the presence of -electrons and the chloride and electron affinities are examined computationally and experimentally, respectively. These cations...

Frustrated Lewis pair chemistry of alkynes

“…Very recently, we have reported 91 the use of cyclopropenium cations as the Lewis acid component of FLPs. In combination with sterically demanding phosphines, the resulting FLPs effect either FLP additions or deprotonation of alkynes depending on the basicity of the phosphine employed (Scheme 34).…”