Chem. J. Chinese Universities ›› 1989, Vol. 10 ›› Issue (5): 543.

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Studies on the Structures and Reactions of 4-Fluoro-3-hydroxyl-1 -substituted Phenyl-6-pyridazinones

Yuan Bin, Lin Chengji, Tian Guanrong   

  1. Department of Chemistry, Yanbian University, Yanji
  • Received:1987-08-20 Online:1989-05-24 Published:1989-05-24

Abstract: The structures of 4-fluoro-3-hydroxy-l-phenyl and substituted phenyl-6-pyridazinones and their reactions with ethereal solution of diazome-thane were investigated. The methylation of this kind of pyridazinones indicates that the yield of O-CH3 derivatives is higher than that of N-CH3. Compound Ⅳ and Ⅵ exhibit a strong herbicidal effect, on barnyard grass, alisma orientalis etc. in rice-fields.

Key words: Fluoropyridazinone, Diazomethane, Methylation

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