文献类型：期刊文献

英文题名：Ytterbium triflate as an efficient catalyst for one-pot synthesis of substituted imidazoles through three-component condensation of benzil, aldehydes and ammonium acetate

作者：Wang, Li-Min; Wang, Yong-Hong; Tian, He; Yao, Yin-Fang; Shao, Jue-Hua; Liu, Bo

机构：[1]E China Univ Sci & Technol, Inst Fine Chem, Adv Mat Lab, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Shanghai Inst Organ Chem, Key Lab Organofluorine Chem, Shanghai 200032, Peoples R China

年份：2006

卷号：127

期号：12

起止页码：1570

外文期刊名：JOURNAL OF FLUORINE CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000242796300006)，CCR-EXPANDED(收录号:WOS:000242796300006)】；

语种：英文

外文关键词：ytterbium trifluoromethanesulfonate [Yb(OTf)(3)]; benzil; aldehyde; imidazole

摘要：Yb(OTf)(3) has been found to be an extremely efficient catalyst for the preparation of imidazoles derivatives via three-component coupling reactions of benzil, aldehydes and ammonium acetate under mild conditions. The process presented here is operationally simple, environmentally benign and has excellent yield. Furthermore, the catalyst can be recovered conveniently and reused for at least three reaction cycles without any loss of activity. (c) 2006 Elsevier B.V. All rights reserved.