Catalytic Reactions in Heterophosphole Complex Chemistry

Catalytic reaction of 2 H -azaphosphirene complex 1 with ortho -, meta -, and para -benzodinitrile ( 2a-c ) led in all cases to the 2 H -1,4,2-diazaphosphole complexes 3a-c if ferrocenium hexafluorophosphate was used as catalyst. In the case of the meta - and para -benzodinitriles 2b-c , the bis-2 H -1,4,2-diazaphosphole complexes 4b-c were additionally obtained. Under the same reaction conditions, acetone, diethylketone and cyclohexanone ( 5a-c ) reacted with complex 1 to yield j 3 -1,3,2-oxazaphospholene complexes 6a-c in good yields.