A new approach to the formation of phosphorus–phosphorus double bonds

Abstract
The reaction of (Me3Si)2CHPCl2 or (Me3Si)3CPCl2 with (2,4,6-But 3C6H2)PH2 in the presence of DBU (1,5-diazabicyclo[5.4.0]undec-5-ene) affords the unsymmetrical diphosphene, (Me3Si)2CHPP(2,4,6-But 3C6H2).