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微波促进萘四甲酸与邻苯二胺的合成反应

商 辉,路冉冉,陈 玉   

  1. 中国石油大学(北京)重质油国家重点实验室,北京 102249
  • 出版日期:2011-08-05 发布日期:2011-08-05

Microwave-assisted synthesis of naphthalenetetracarboxylic acid and o-phenylenediamine

SHANG Hui,LU Ranran,CHEN Yu   

  1. State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China
  • Online:2011-08-05 Published:2011-08-05

摘要:

还原红14是一种重要的还原染料,由橙7和还原红15两种互为正反异构体的物质组成,主要由萘四甲酸和邻苯二胺反应生成。本文研究了在微波场存在下萘四甲酸与邻苯二胺的合成反应,分别考察了反应温度(130160 )、反应时间(540 min)、加热方式对产物组成的影响。结果表明:基于微波与极性物质分子的相互作用,反应温度和时间及加热速率对产品组成影响较大,且温度越高,生成的反式产物越高。反应温度160 、反应时间40 min时,反式产物含量达到最大值61%。延长反应时间有利于反式产物的生成。反应温度在60100 的预缩合反应有利于反式产物的生成。

Abstract:

The main method to produce vat red 14a kind of vat dyeis through the reaction of naphthalenetetracarboxylic acid and o-phenylenediamine with the presence of catalyst. There exist two isomers of vat red 14the trans-structure is named orange 7 and the cis-structure is named vat red 15. The investigations of microwave heating in the synthesis of vat red 14 were carried outand the effects of different temperatures130160 ),reaction times 540 min),and heating rates were discussed. It was found that temperaturereaction time and heating rate were the key factors determining the reaction products. Cis-product decreased with increasing temperatureand long reaction time favored trans-product. Trans-product could reach as high as 61% at temperature of 160 and reaction time of 40 min. It was also found that pre-synthesis at 60100 favored the formation of the trans-product.

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