有机化学 ›› 2015, Vol. 35 ›› Issue (7): 1506-1513.DOI: 10.6023/cjoc201501040 上一篇    下一篇

研究论文

N-取代吡啶基-2-酰基四氢哒嗪-1(2H)-硫代甲酰胺的合成及除草活性

张浩a, 刘瑞全a, 李奇博a, 李青阳a, 陈亚红b, 刘克昌a, 刘尚钟a   

  1. a 中国农业大学理学院应用化学系 北京 100193;
    b 北京颖泰嘉和生物科技有限公司 北京 100192
  • 收稿日期:2015-01-29 修回日期:2015-02-28 发布日期:2015-07-24
  • 通讯作者: 刘尚钟 E-mail:shangzho@cau.edu.cn
  • 基金资助:

    “十二五”科技支撑计划(No. 2011BAE06B03)、国家自然科学基金(No. 21172256)资助项目.

Synthesis and Herbicidal Activities of N-Substituted Pyridyl-2- acyltetrahydropyridazine-1(2H)-carbothioamides

Zhang Haoa, Liu Ruiquana, Li Qiboa, Li Qingyanga, Chen Yahongb, Liu Kechanga, Liu Shangzhonga   

  1. a Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193;
    b Nutrichem Co., Ltd, Beijing 100192
  • Received:2015-01-29 Revised:2015-02-28 Published:2015-07-24
  • Supported by:

    Project supported by the National Key Technologies R&D Program (No. 2011BAE06B03), and the National Natural Science Foundation of China (No. 21172256).

以取代氨基吡啶为原料, 经二步反应合成关键中间体--取代吡啶基异硫氰酸酯, 再分别与4个制备的取代六氢哒嗪中间体缩合, 合成了4个系列共22个新型N-取代吡啶基-2-酰基四氢哒嗪-1(2H)-硫代甲酰胺类化合物8~11. 所有目标产物的结构均经过1H NMR, 13C NMR和HRMS的确证. 初步的除草活性测试表明, 部分化合物在375 g·ha-1剂量下, 对双子叶杂草苘麻及反枝苋和单子叶杂草马唐具有约100%芽前抑制活性. 进一步活性筛选发现, 2-[(5-氯吡啶-2-基)硫代氨基甲酰基]四氢哒嗪-1(2H)-甲酸乙酯(9e)在45 g·ha-1 剂量下对苘麻的抑制率仍达到95%.

关键词: 酰氨基硫脲, 六氢哒嗪, 吡啶, 合成, 除草活性

Key intermediates-substituted pyridyl isothiocyanates, which were prepared from starting material substituted pyridyl amines via two steps, were further condensed with four substituted hexahydropyridazine intermediates to afford four series of novel N-substituted pyridyl-2-acyltetrahydropyridazine-1(2H)-carbothioamides 8~11. The structures of all compounds have been confirmed by 1H NMR, 13C NMR and HRMS techniques. The preliminary bioassay results indicated that some of the title compounds exhibited approximately 100% inhibition against Abutilon theophrasti, Amaranthus retroflexus and Digitaria sanguinalis at a dose of 375 g·ha-1. In particular, ethyl 2-((5-chloropyridin-2-yl)carbamothioyl)tetrahydropy- ridazine-1(2H)-carboxylate (9e) displayed the best pre-emergence herbicidal effect against Abutilon theophrasti with 95% inhibitory activity even at 45 g·ha-1.

Key words: acyl thiosemicarbazides, hexahydropyridazine, pyridine, synthesis, herbicidal activity