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题名: Synthesis of diphenylmethane derivatives in Lewis acidic ionic liquids
作者: Yin, DH;  Li, CZ;  Tao, LA;  Yu, NY;  Hu, S;  Yin, DL
关键词: Friedel-Crafts reaction ;  benzylation ;  diphenylmethane ;  ionic liquids ;  catalysts
刊名: JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
发表日期: 2006-02-15
DOI: 10.1016/j.molcata.2005.10.010
卷: 245, 期:1-2, 页:260-265
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Diphenylmethane and its derivatives were prepared via Friedel-Crafts benzylation reaction using ionic liquids of 1-butyl-3-methylimidazolium chloride-ZnCl2 (BmimCl-ZnCl2), 1-butyl-3-methylimidazolium chloride-FeCl3 (BmimCl-FeCl3) and 1-butyl-3-methylimidazolium chloride-FeCl2 (MmimCl-FeCl2) as both reaction media and Lewis acid catalysts. In comparison with the reaction performed in conventional organic solvent, faster reaction rate and higher selectivity to target products were achieved in such ionic liquids media. The effects of reaction temperature, reaction time, and the ratio of metal chloride to BmimCl, as well as the amount of ionic liquids on the Friedel-Crafts benzylation were also investigated. It was found that increasing reaction temperature led to high catalytic activity and selectivity, and that the excess amount of Lewis acidity of ionic liquid was detrimental to the reaction. Moreover, these ionic liquids could be conveniently recovered for recycled use; in particular, BmimCl-ZnCl, with moisture-stability could be reused at least eight times without loss of catalytic activity. (c) 2005 Elsevier B.V. All rights reserved.
关键词[WOS]: FRIEDEL-CRAFTS ALKYLATION ;  CATALYSTS ;  EPOXIDATION ;  EXTRACTION ;  DODECENE ;  MEDIA ;  OXIDE
语种: 英语
WOS记录号: WOS:000235598800036
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140228
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Hunan Normal Univ, Inst Fine Catalysis & Synth, Changsha 410081, Hunan, Peoples R China
2.Hunan Normal Univ, Key Lab Chem Biol & Tradit Chinese Med Res, Minist Educ, Changsha 410081, Hunan, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Yin, DH,Li, CZ,Tao, LA,et al. Synthesis of diphenylmethane derivatives in Lewis acidic ionic liquids[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,2006,245(1-2):260-265.
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