NEW MATERIAL:Meta phenoxy benzoic acid derivatives of formula I: [X is nitro, cyano, trifluoromethyl, dialkylamino, alkylthio, alkoxysulfonyl group, etc.; Y is alkul, alkoxy, or halogen; m is an integer 0W3; n is an integer 1 or 2; r is NR1R2; formula II: (R1 is H, alkyl group, etc.; R2 is alyl, alkenyl, alkynyl group, etc.; l is 2, 4, 5, or 6)].
EXAMPLE: N-Ethyl-3-(4-nitrophenoxy)benzoic acid amide.
USE: Herbicides particularly effective for nice plant and barnyord grass. Safe to rice plant and durable remaining effects.
PROCESS: For example, meta-phenoxybenzoic acid or its reactive acid derivatives are reacted with a primary or secondary amine of formula HN(R1)R2 or cyclic secondary amine of formula IV to give the objective compounds of formula I.
HASHIMOTO SHIYUNICHI
KITAMURA SHIGEYOSHI
MATSUO TAKASHI
MINE AKIHIKO
KAMOSHITA KATSUZOU
JPS5071826A | 1975-06-14 |
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