Organometallics

Dehydrogenative Coupling of 4-Substituted Pyridines Catalyzed by a Trinuclear Complex of Ruthenium and Cobalt

M Nagaoka, T Kawashima, H Suzuki, T Takao

文献索引：Kawashima, Takashi; Takao, Toshiro; Suzuki, Hiroharu Journal of the American Chemical Society, 2007 , vol. 129, # 36 p. 11006 - 11007

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摘要

The dehydrogenative coupling of 4-substituted pyridines catalyzed by a heterometallic trinuclear complex composed of Ru and Co,(Cp* Ru) 2 (Cp* Co)(μ-H) 3 (μ3-H)(1, Cp*= η5- C5Me5), was investigated. When the pyridine substrate contains an electron-donating group at the 4-position, complex 1 showed a high catalytic activity compared to di-and triruthenium complexes (Cp* Ru) 2 (μ-H) 4 (4) and (Cp* Ru) 3 (μ-H) 3 (μ3-H) 2 (5). The catalytic activity ...