C−CN vs C−H Cleavage of Benzonitrile Using [(dippe)PtH]2
摘要:
The reaction of [(dippe)PtH](2) with benzonitrile at 140 degrees C produced two products, the C-H-activated adduct (dippe)Pt(H)(2-C6H4CN) (2) and the C-CN-activated adduct (dippe)Pt(Ph)(CN) (5), with the kinetically favored C-H activation product forming in a significant majority (similar to 18:1). Further reaction showed a formal beta-cyano elimination in 2, forming (dippe)Pt(H)(CN) (3) and benzene. Following the elimination, C-H activation of a second benzonitrile by 3 led to three regioisomers of (dippe)Pt(CN)(C6H4CN) (4).