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Impact of Substituents Attached to N ‐Heterocyclic Carbenes on the Catalytic Activity of Copper Complexes in the Reduction of Carbonyl Compounds with Triethoxysilane
Author(s) -
Peng Jiajian,
Chen Lingzhen,
Xu Zheng,
Hu Yingqian,
Li Jiayun,
Bai Ying,
Qiu Huayu,
Lai Guoqiao
Publication year - 2009
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200990355
Subject(s) - chemistry , carbene , triethoxysilane , copper , catalysis , salt (chemistry) , alkyl , medicinal chemistry , ligand (biochemistry) , aryl , organic chemistry , chloride , polymer chemistry , biochemistry , receptor
By using functionalized imidazolium salts such as 1‐allyl‐3‐alkylimidazolium or 1‐alkyl‐3‐vinylimidazolium salts as carbene ligand precursors, the reduction of aryl ketones with triethoxysilane may be catalyzed by copper salt/imidazolium salt/KO t Bu systems. The functional substituents attached to the N ‐heterocyclic carbene (NHC) serve to enhance the catalytic activity. Different copper salts also have an effect on the catalytic activity, with copper(II) acetate monohydrate being superior to copper(I) chloride.