| 苯并硫氮杂卓化合物助催化下甲苯定向氯化 |
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| 引用本文： | 黄文涛,屈一新,王水,王际东. 苯并硫氮杂卓化合物助催化下甲苯定向氯化[J]. 工业催化, 2010, 18(1): 66-69. DOI: 10.3969/j.issn.1008-1143.2010.01.015 |
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| 作者姓名： | 黄文涛 屈一新 王水 王际东 |
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| 作者单位： | 北京化工大学化学工程学院,北京,100029;北京化工大学化学工程学院,北京,100029;北京化工大学化学工程学院,北京,100029;北京化工大学化学工程学院,北京,100029 |
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| 摘 要： | 甲苯氯化反应在L酸催化下,加入助催化剂可以调节邻氯甲苯和对氯甲苯比率。合成了三种不同结构杂环苯并硫氮杂卓化合物助催化剂。以SbCl3为催化剂,分别用三种不同结构苯并硫氮杂卓化合物为助催化剂,考察了甲苯定向氯化对氯甲苯选择性的影响;得出最高选择性助催化剂后,找出温度和催化剂用量等工艺条件,使甲苯定向氯化对氯甲苯与邻氯甲苯物质的量之比达到1.29。
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| 关 键 词： | 催化化学 助催化剂 苯并硫氮杂卓 甲苯定向氯化 |
Ring-chlorination of toluene co-catalyzed by benzothiazepines derivatives |
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| HUANG Wentao,QU Yixin,WANG Shui,WANG Jidong. Ring-chlorination of toluene co-catalyzed by benzothiazepines derivatives[J]. Industrial Catalysis, 2010, 18(1): 66-69. DOI: 10.3969/j.issn.1008-1143.2010.01.015 |
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| Authors: | HUANG Wentao QU Yixin WANG Shui WANG Jidong |
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| Affiliation: | School of Chemical Engineering, Beijing University of Chemical Technology, Bejing 100029, China |
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| Abstract: | Ring-chlorination of toluene is usually carried out in the presence of Lewis acids and co-catalysts that can increase the ratio of p-/o- isomers. In this paper, the synthesis of three benzothiazepines derivative compounds are reported. The ring-chlorination of toluene using SbCl3 as a catalyst and benzoth- iazepines derivatives as co-catalysts at different temperature and different dosage of co-catalyst were stuied. All of the compounds can increase the p-/o- ratio in the reaction. Among them N-（2,3-dihydro-1,5- benzothiazepine-4yl）-hydroxylamine exhibited the best co-catalytic results that gave p-/o-ratio of 1.29. |
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| Keywords: | catalytic chemistry co-catalyst benzothiazepine toluene ring-chlorination |
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