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Chemical Research in Chinese Universities ›› 2013, Vol. 29 ›› Issue (4): 690-694.doi: 10.1007/s40242-013-2525-9

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Synthesis and Herbicidal Activities of Potassium Methyl 1-(Substituted Phenoxyacetoxy)alkylphosphonate

WANG Tao, WANG Wei, PENG Hao, HE Hong-wu   

  1. Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
  • Received:2012-12-31 Revised:2013-02-04 Online:2013-08-01 Published:2013-07-15
  • Contact: PENG Hao, HE Hong-wu E-mail:penghao@mail.ccnu.edu.cn;he1208@mail.ccnu.edu.cn
  • Supported by:

    Supported by the National Basic Research Program of China(No.2010CB126100), the National Key Technologies Research and Development Progaram of China(No.2011BAE06B03), the National Natural Science Foundation of China(No.21172090) and the Program for Changjiang Scholars and Innovative Research Team in University of China(No.IRT0953).

Cited

11

Abstract:

A series of potassium methyl 1-(substituted phenoxyacetoxy)alkylphosphonates(9a―9o) was designed and synthesized. The results of preliminary bioassays indicate that most of the title compounds possess excellent pre-emergence and post-emergence herbicidal activities against Brassica napus, Amaranthus mangostanus, Medicago sativa, Echinochloa crusgalli, and Digitaria sanguinalis at a dosage of 1500 g/ha(1 ha=10000 m2). Especially, potassium methyl 1-(2,4-dichlorophenoxyacetoxy)-1-(4-methylphenyl)methylphosphonate(9g) and potassium methyl 1-(2,4-dichlorophenoxyacetoxy)-1-(furan-2-yl)methylphosphonate(9j) show the best herbicidal activity against five tested weeds with more than 85% inhibitory rate in pre-emergence.

Key words: Herbicidal activity, Phosphonate, Potassium salt