Regioselective nitration of aromatics under phase-transfer catalysis conditions

被引：18

作者：

Wang, Peng-Cheng ^{[1
]}

Lu, Ming ^{[1
]}

Zhu, Jie ^{[1
]}

Song, Yan-Ming ^{[1
]}

Xiong, Xian-feng ^{[2
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Chem Engn, Nanjing 210094, Peoples R China

[2] Xian Modern Chem Res Inst, Xian 710065, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2011年 / 14卷 / 01期

关键词：

Phase-transfer catalysis nitration; Aromatic compounds; Quantitative calculation; Regioselectivity; DILUTE NITRIC-ACID; NITRONIUM SALT NITRATIONS; SULFURIC-ACID; LIQUID-PHASE; O-XYLENE; PHENOLS; ALKYLBENZENES; SUBSTITUTION; CHLORINATION; ZEOLITE;

D O I：

10.1016/j.catcom.2011.07.013

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mononitration of aromatics was performed in a two-phase system using phase-transfer catalyst. The most advantageous conditions for the nitration were determined (temperature, reaction time, the type and amount of phase transfer catalyst, nitrification strength of the nitro-sulfuric acid). From the results, a significant improvement in the selectivity and conversion of the nitration of xylene was observed: the ratio of 4-nitro-m-xylene to 2-nitro-m-xylene was unprecedented increased up to 91.3%:7.7%, the ratio of 4-nitro-o-xylene to 3-nitro-o-xylene was also increased to 71.1%:27.2%; both the conversions were over 96%. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：42 / 47

页数：6

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