影像科学与光化学 ›› 2005, Vol. 23 ›› Issue (1): 37-40.DOI: 10.7517/j.issn.1674-0475.2005.01.37

• 研究简报 • 上一篇    下一篇

2,4-二氯-3-乙基-6-硝基苯酚的合成

赵宏1,2, 孙健2, 许佑君1   

  1. 1. 沈阳药科大学, 制药工程学院, 辽宁, 沈阳, 110016;
    2. 大连凯飞化学股份有限公司, 辽宁, 大连, 116011
  • 收稿日期:2004-05-21 修回日期:2004-07-23 出版日期:2005-01-23 发布日期:2005-01-23
  • 通讯作者: 许佑君

A Practical Synthesis of 2,4-Dichloro-3-Ethyl-6-Nitrophenol via TCIA

ZHAO Hong1,2, SUN Jian2, XU You-jun1   

  1. 1. School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang 110016, Liaoning, P. R. China;
    2. Dalian Chemphy Chemical Co., Ltd., Dalian 116011, Liaoning, P. R. China
  • Received:2004-05-21 Revised:2004-07-23 Online:2005-01-23 Published:2005-01-23

摘要: 2,4-二氯-3-乙基-6-硝基苯酚是合成照相显影剂的重要中间体.本文以三氯异氰脲酸(TCIA)为氯化试剂,对4-硝基乙苯氯化,再经碱解和酸化,合成该中间体.由于TCIA易于计量、相应反应过程易于监控及环境污染轻微,大大简化了反应操作,也降低了合成成本.经过详细考察发现:氯化时TCIA按1.5倍投料,不仅反应收率较高,同时也有效地减少了四氯副产物的生成.此外,氯化所使用的溶剂硫酸、碱解采用的溶剂甲醇,均可以回收循环使用,而几乎不影响相应实验结果.

关键词: 显影剂, 有机合成, 氯化反应, 三氯异氰脲酸

Abstract: 2,4-dichloro-3-ethyl-6-nitrophenol is an important intermediate for color film developer.We reported here a novel synthesis of the compound via TCIA chlorination,hydrolysis and acidification.Due to the easy handling of TCIA,the convenient detection for the process,this new chlorination method is very mild and echo-friendly and therefore cost-effective.When loaded with 1.5 mol (equivalence) of TCIA,the reaction proceeded smoothly in high yield and the tetrachloro by-product was effectively minimized.The solvents in the first two steps were recyclely used without severely affecting the results.

Key words: film developer, organic synthesis, chlorination, trichloroisocyanuric acid

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