Synthesis and Structural Diversity of Heterobimetallic Lanthanide鈥揚otassium Complexes and Catalytic Activity for Amidation of Aldehydes with Amines

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• 作者：Bin Xu ; Lingling Huang ; Zijian Yang ; Yingming Yao ; Yong Zhang ; Qi Shen
• 刊名：Organometallics
• 出版年：2011
• 出版时间：July 11, 2011
• 年：2011
• 卷：30
• 期：13
• 页码：3588-3595
• 全文大小：942K
• 年卷期：v.30,no.13(July 11, 2011)
• ISSN：1520-6041

文摘

Four heterobimetallic lanthanide鈥損otassium complexes stabilized by the carbon-bridged bis(phenolate) ligand MBMP^{2鈥?/sup> (MBMP = 2,2鈥?methylene bis(6-tert-butyl-4-methylphenolate)), [{(MBMP)₂La(THF)₂}₂K][K(THF)₆] (1), [(MBMP)Nd(渭-MBMP)K(THF)]₂ (2), [(THF)₂Sm(MBMP)₂K(THF)₂] (3), and [(THF)₂Yb(MBMP)₂K(THF)₃] (4), were synthesized, and their structural features were provided. It was found that the ionic radii of lanthanide metals have a profound effect on the structures of the heterobimetallic complexes. Complexes 1 to 4 are efficient catalysts for amidation reactions of aldehydes with amines to produce amides in good to excellent yields under mild conditions.}