1,3-Dinitrone Pincer Complexes of Palladium and Nickel: Synthesis, Structural Characterizations, and Catalysis

Neutral and cationic Pd(II) and Ni(II) OCO-type pincer complexes have been synthesized from the metalation of 1,3-dinitrones via C−H or C−Br bond activation using Pd(0), Pd(II), and Ni(0) starting materials. In each complex, the two six-membered metallacycles are non-coplanar and atropisomerization...

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Bibliographic Details
Published in:Organometallics 2009-06, Vol.28 (11), p.3233-3238
Main Authors: Zhang, Yao, Song, Guoyong, Ma, Gaoyuan, Zhao, Jing, Pan, Cheng-Ling, Li, Xingwei
Format: Article
Language:English
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Summary:Neutral and cationic Pd(II) and Ni(II) OCO-type pincer complexes have been synthesized from the metalation of 1,3-dinitrones via C−H or C−Br bond activation using Pd(0), Pd(II), and Ni(0) starting materials. In each complex, the two six-membered metallacycles are non-coplanar and atropisomerization proceeds with a low barrier. Palladium dinitrone complexes have been shown as active catalysts for Heck couplings and the related Ni complex for Kumada reactions with turnover numbers up to 950 000.
ISSN:0276-7333
1520-6041
DOI:10.1021/om900009h