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BIBTEX RIS

C−H Bond Activation by Unsymmetrical 2-( N -Arylimino)pyrrolide Pt Complexes: Geometric Effects on Reactivity

2003; American Chemical Society; Volume: 125; Issue: 42 Linguagem: Inglês

10.1021/ja036511d

ISSN

1943-2984

Autores

Carl N. Iverson, Charles A. G. Carter, R. Tom Baker, John D. Scollard, Jay A. Labinger, John E. Bercaw,

Tópico(s)

Organometallic Complex Synthesis and Catalysis

Resumo

Reactions of chloroplatinum methyl complexes with N-(arylimino)pyrrolide anions afford cis and trans neutral platinum methyl complexes. Isomers with methyl trans to the pyrrolide nitrogen activate benzene C-H bonds at 85 degrees C more than 80 times faster than the corresponding cis isomer. In addition, reactions of platinum dimethyl complexes with N-(arylimino)pyrroles (Ar = 4-substituted phenyl) in C6D6 at ambient temperature give unlabeled methane and cis methyl complex containing heavily deuterated Pt-Me. In contrast, bulky aryl substituents give methane isotopomers and trans-Pt-Ph product. The origins of these observations are discussed.

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