2-[(4-HETEROCYCLE PHENOXYMETHYL)PHENOXY] ALKANOATES, HERBICIDAL COMPOSITION AND METHOD OF CONTROLLING UNDESIRED VEGETATION Russian patent published in 1998 - IPC

FIELD: agriculture. SUBSTANCE: present invention describes new 2-[(4-heterocycle- phenoxymethyl]phenoxy) alkanoates of general formula I given in the specification wherein Q is 4-difluoromethyl- 4,5-dihydro-3-methyl-1,2,4-triazol-5 (1H)-OH-1-yl, or 1- methyl-6-trifluoromethyl-2,4] (1H, 3H) pyrimidinedion-3- yl; A is group of formula: RO-C(O)-C(R¹)H R¹-H, CH₃; wherein R is H, lower alkyl, unsubstituted or substituted by chlorine or (CHR⁷-CH₂-O)_nR⁸ wherein R⁷ is H or methyl; R⁸ is lower alkyl; n is 1 or 2; X is H, methyl, F or Cl; W is O or S: Z is H, F, Cl, Br, lower alkyl or methoxy; Z¹ is H, F or Cl; or L and Z¹ taken together are -(CH₂)₄ to form tetrahydronaphthyl. Said compounds are included in herbicidal composition which is useful for controlling undesired vegetation. EFFECT: improved properties of herbicidal composition. 21 cl, 5 tbl