Synthesis and Catalytic Activity of Ferrocenyl-substituted N-Heterocyclic Carbene Silver Complexes

doi:10.7503/cjcu20130254

Abstract

Abstract:

Ferrocenyl-substituted N-heterocyclic carbene(NHC) transition metal complexes have received considerable attention in recent years due to their extensive applications in homogenous catalysis or electrochemical investigation. In this work, four NHC-silver complexes(NHC)₂AgX(X=PF₆ or BF₄) were synthesized by the reactions of N-ferrocenylmethyl-N'-(pyridylmethyl)imidazolium salts with Ag₂O under the phase transfer catalytic conditions, and were characterized by elemental analysis, NMR and single-crystal X-ray crystallographic analysis. The silver atom in four complexes showed a two-coordinated linear structure. The pyridyl nitrogen atom didn't take part in the coordination to the silver center. Those complexes exhibited highly effective catalytic activity in the three-component coupling reaction of aldehyde, alkyne and amine.

Key words: Ferrocene, N-Heterocyclic carbene, Silver, Catalytic activity

CLC Number:

O627.12

TrendMD:

LI Qiang, SUN Bao-Chuan, SONG Hai-Bin, TANG Liang-Fu. Synthesis and Catalytic Activity of Ferrocenyl-substituted N-Heterocyclic Carbene Silver Complexes[J]. Chem. J. Chinese Universities, 2013, 34(11): 2511.

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