NEW MATERIAL:A compound expressed by formula I (R and R1 are H or lower alkyl; R2 is lower alkyl; X is halogen, alkyl or alkoxy; y is halogen or alkyl; m and n are 0, 1 or 2).
EXAMPLE: (E)-N(α,α-Dimethylbenzyl)-2-phenyl-2-buteneamide.
USE: A herbicide exhibiting no crop injury to paddy rice, effectively controlling a lowland weed (e.g. Echinochloa oryzicola Vasing or Cyperusdifformis L.) and having high activity.
PREPARATION: Benzylamines expressed by formula II are dissolved in a proper organic solvent and then reacted with 2-(substituted)phenyl-2-alkenoic acid to provide the aimed compound expressed by formula I. The reaction is carried out using a suitable reaction auxiliary, e.g. thionyl chloride, phosphorus trichloride, phosphorus pentachloride or phosphorus oxychloride.
SATO MASAHIRO
IKEDA ATSUHIKO
MATSUNARI KENJI
YAMADA YUJI
HIRATA MICHIYA
NAKAMURA YASUO
IHARA CHEMICAL IND CO
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