Chem. J. Chinese Universities ›› 2016, Vol. 37 ›› Issue (5): 892.doi: 10.7503/cjcu20160065

• Organic Chemistry • Previous Articles     Next Articles

Synthesis, Structural Characterization, Insecticidal and Fungicidal Activity of (1H-1,2,4-Triazol-5-yl)carbamates

JIA Changqing1, YANG Dongyan1, CHE Chuanliang1, MA Yongqiang1, RUI Changhui2, YAN Xiaojing2, QIN Zhaohai1,*()   

  1. 1. College of Science, China Agricultural University, Beijing 100193, China
    2. Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
  • Received:2016-01-26 Online:2016-05-10 Published:2016-04-18
  • Contact: QIN Zhaohai E-mail:qinzhaohai@263.net
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.31272076)

Abstract:

A series of novel (1H-1,2,4-triazol-5-yl)carbamates(5 and 6) was synthesized via the method of combining the crucial sub-structures of carbamates and 1H-1,2,4-triazole-5-amines in one molecules. Their structures were characterized by nuclear magnetic resonance(NMR), infrared(IR) spectrometry, high resolution mass spectrometry(HRMS) and elemental analysis. The preliminary insecticidal activity assays indicated that the lethal rates of target compounds to Myzus persicae were good at the concentration of 500 μg/mL. And the lethal rate of several compounds was more than 90%. Further research of these compounds against Myzus persicae indicated that compound 5b showed considerably high activity with a LC50 of 9.49 μg/mL, which confirmed that these compounds are valuable for further study. The preliminary fungicidal activity assays indicated that these compounds exhibited low fungicidal activity against tested fugi in vitro. At a dose of 50 μg/mL, only a few of compounds gave limited inhibition on mycelium growth. In addition, the structure-activity relationship was also discussed.

Key words: 1H-1,2,4-triazole-5-amine, Carbamate, Insecticidal activity, Fungicidal activity

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