Chin. J. Org. Chem. ›› 2010, Vol. 30 ›› Issue (02): 260-265. Previous Articles     Next Articles

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3-芳基-6-甲基-1,6-二氢-1,2,4,5-四嗪及其衍生物的合成和晶体结构

徐峰*,1,杨珍珍1,胡惟孝2,奚立民1   

  1. (1台州职业技术学院生物与化学工程系 台州 318000)
    (2浙江工业大学药学院 杭州 310032)
  • 收稿日期:2009-04-29 修回日期:2009-07-07 发布日期:2010-02-20
  • 通讯作者: 徐峰 E-mail:xufeng901@126.com
  • 基金资助:

    国家级.国家自然科学基金

Synthesis and Structures of 3-Aryl-6-methyl-1,6-dihydro- 1,2,4,5-tetrazines and Their Derivatives

Xu Feng*,1 Yang Zhenzhen1 Hu Weixiao2 Xi Limin1   

  1. (1 Department of Biological & Chemical Engineering, Taizhou Vocational & Technical College, Taizhou 318000)
    (2 College of Pharmaceutical Science, Zhejiang University of Technol-ogy, Hangzhou 310032)
  • Received:2009-04-29 Revised:2009-07-07 Published:2010-02-20
  • Contact: Feng Xu E-mail:xufeng901@126.com

A convenient and effective method was developed from the starting materials acetonitrile and aryl nitrile via three steps to synthesize 3-aryl-6-methyl-1,6-dihydro-1,2,4,5-tetrazines. On the basis of which, some 3-aryl-6-methyl-1,6-dihydro-1,2,4,5-tetrazine derivatives were synthesized and characterized by elemental analysis, 1H NMR, IR and HRMS techniques. The X-ray single crystal diffraction study of 6-methyl-3-phenyl-N-(2-tolyl)-1,6-dihydro-1,2,4,5-tetrazine-1-carboxamide (5a) indicates that 5a belongs to a monoclinic system, with a=1.3941(6) nm, b=0.5675(2) nm, c=2.0614(8) nm; αγ=90°, β=102.055(6)°; V=1.5949(11) nm3. The central tetrazine ring adopts an unsymmetrical boat structure. It could be considered that the molecule had a homoaromaticity.

Key words: 1,6-dihydro-1,2,4,5-tetrazine, unsymmetry, crystal structure, homoaromaticity