Reactivity of 1.2-diphosphinobenzene

Abstract

1.2-Diphosphinobenzene as a versatile building block and a bifunctional prim. phosphine delivers with various reactants a large number of new P-organo compounds. The possibilities of formmation of symm./antisymm. phosphines, benzocondensed P-E-P-heterocycles, 1.3-benzodiphospholes, 1.2-bis-alkylidenebenzenes, other systems with P[dbnd]C-double bonds and their nmr-data are discussed.