Epoxide-like Chemistry: 1,2-Bifunctional P‑Ligands via Stereo- and Regioselective Ring Opening of an Oxaphosphirane Complex

Facile stereo- and regioselective ring opening of the oxaphosphirane complex A is presented using small molecules with differently polar E–H bonds (HCl, H₂O, and NH₃). The synthetic potential of the thus obtained novel 1,2-bifunctional ligands B is illustrated in cyclocondensation reactions, leading to the novel heterocyclic P-ligands C.