| 摘要 |
NEW MATERIAL:A compound expressed by formula I (R1 an R2 are alkyl, provided that those are not simultaneously methyl; R3 is H, alkyl, alkenyl, alkynyl, haloalkyl, cyanoalkyl, alkoxyalkyl, alkenyloxyalkyl, alkoxy carbonylalkyl, alkylthiocarbonylalkyl, etc.; X is halogen). EXAMPLE:2-Chloro-2'-methyl-3'-fluoro-6'-ethylacetoanilide. USE:A herbicide for paddy field rice and upland crop, having more excellent than conventional haloacetoanilide based herbicideactivity and high safeness. PREPARATION:For example, an aniline derivative expressed by formula II is reacted with haloacetylhaloids expressed by formula III (Hal is halogen) in an organic solvent in the presence of an acid bonding agent to provide a compound expressed by formula I.
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