Toluene Nitration Catalyzed by Metal Triflates

Chin. J. Org. Chem. ›› 2006, Vol. 26 ›› Issue (08): 1111-1114. Previous Articles Next Articles

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三氟甲磺酸盐催化甲苯硝化反应的研究

李小青，杜晓华*，徐振元*

(浙江工业大学催化加氢研究中心绿色化学合成技术国家重点实验室培育基地杭州 310014)

收稿日期:2005-09-28 修回日期:2006-02-18 发布日期:2006-07-26
通讯作者: 杜晓华*，徐振元*

Toluene Nitration Catalyzed by Metal Triflates

LI Xiao-Qing,DU Xiao-Hua*,XU Zhen-Yuan*

(State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Catalytic Hydrogenation Re-search Center, Zhejiang University of Technology, Hangzhou 310014)

Received:2005-09-28 Revised:2006-02-18 Published:2006-07-26
Contact: DU Xiao-Hua*,XU Zhen-Yuan*

Abstract

In this paper, the metal triflates were employed as Lewis acid catalysts for nitration of toluene with 1 equiv. of nitric acid. Zr(OTf)₄ and Sm(OTf)₃ were found to be the most effective ones among the catalysts investigated, and the conversions of toluene were 77.1% and 67.4% respectively. The conversion of 100% could be reached with 98% nitric acid, while the conversion became 95.4% when toluene was used as solvent. The conversion of toluene was achieved to 89.9% with the isomer distributing of o∶m∶p＝44.6∶5.7∶49.7 when using Sm(OTf)₃ loading on silica gel.

Key words: silica gel, supported catalyst, toluene nitration, metal triflate

Cite this article

LI Xiao-Qing,DU Xiao-Hua*,XU Zhen-Yuan*. Toluene Nitration Catalyzed by Metal Triflates[J]. Chin. J. Org. Chem., 2006, 26(08): 1111-1114.

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三氟甲磺酸盐催化甲苯硝化反应的研究

Toluene Nitration Catalyzed by Metal Triflates

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