Synthesis of Dialkyl-Diphosphenes and -Distibenes that Bear Extended Triptycyl Groups

Abstract

Dialkyl-diphosphenes and -distibenes of the type RTrp*2E2 (E = P, Sb; R = H, n-Pr) were synthesized and isolated using the steric protection of extended triptycyl groups (Trp*). The solubility of these diphosphenes and distibenes can be increased by installing a propyl group onto the bridgehead position of the triptycyl core (n-PrTrp*).