DERIVATIVES OF BENZANILIDES OR BENZYLAMIDES, HERBICIDAL COMPOSITION AND A METHOD OF STRUGGLE AGAINST WEED GROWTH Russian patent published in 1994 - IPC

FIELD: organic chemistry. SUBSTANCE: product - derivatives of benzanilides and benzamides of the general formula (I) given in description, where x¹, x², x³ every means independently H or Hal, or C₁-C₄-alkyl; n = 0 or 1; Z - H, Gal, amino; C₁-C₄-alkyl, C₁-C₄-haloidalkyl, C₁-C₄-alkylthio, C₁-C₄-alkoxy or phenoxy, which is nonobligatory substituted with C₁-C₄-haloidalkyl; A - CH or N; Y¹ and Y² every independently is H, Gal, C₁-C₄-alkyl, C₁-C₄-haloidalkyl, C₁-C₄-alkoxy or C₁-C₄- haloidalkoxy; W - H or when A means CH and, at least, one of Y¹ and Y² is different from H or, when A - H, W - H or Gal; at condition that when A - N then every from Y¹ and Y² - H. Reagent 1: compound of formula (II), where M - removal group. Reagent 2: phenol or pyridinol or their reactive derivatives. Yield is 70-80% . Synthesized compounds are used in agriculture. EFFECT: enhanced yield of products. 5 cl, 3 tbl