ChemInform Abstract: Synthesis of the First 1,2,3‐Benzazadiphosphole. A Stable P=P Double Bond.

Abstract

1991 organo-phosphorus compounds, nonmetal heterocycles organo-phosphorus compounds, nonmetal heterocycles S 0087 -206Synthesis of the First 1,2,3-Benzazadiphosphole. A Stable P=P Double Bond.-Reaction of 2-aminophenylphosphine (I) with equimolar amounts of hexamethylphosphorous triamide (II) gives the benzazadiphosphole (III) with an intracyclic P=P double bond. (III) undergoes (4 + 2) cycloaddition with 2,3-dimethylbutadiene (V), yielding the diphosphacarbazole (VI). -(RAUZY, K.; PAGE, P.; MAZIERES, M.-R.; SANCHEZ, M.; BELLAN,