Phosphazene base-catalyzed telescopic three-component reaction involving 1,1-difunctionalization of electron-deficient alkenes

Phosphazene base, P2- t Bu, promoted the telescopic three-component reaction of diethyl phosphite, cinnamonitrile derivatives, and N -Boc imines, providing β-aminophosphonates having a tetrasubstituted carbon in a highly diastereoselective manner.