| 摘要 |
Oxazole- and thiazolecarboxamides of the formulae Ia and Ib <IMAGE> Ia <IMAGE> Ib where the substituents have the following meanings: X oxygen or sulfur; R1 hydrogen; halogen; substituted or unsubstituted C1-C6-alkyl, benzyl, cycloalkyl, alkenyl, alkynyl, phenyl, phenoxy or phenylthio; alkoxy; alkylthio; haloalkoxy; haloalkylthio; or a substituted or unsubstituted 5- or 6-membered heterocyclic radical; R2 formyl, 4,5-dihydrooxazol-2-yl or -COYR5; Y oxygen or sulfur; R5 hydrogen; cycloalkyl; substituted or unsubstituted alkyl, phenyl, benzyl, alkenyl, cycloalkenyl or alkynyl; a substituted or unsubstituted 5- or 6-membered heterocyclic radical; phthalimido; tetrahydrophthalimido; succinimido; maleiimido; one equivalent of a cation; or -N=CR6R7; R6, R7 hydrogen; alkyl; cycloalkyl; phenyl; furyl or together a methylene chain of 4 to 7 members; R3 hydrogen or substituted or unsubstituted alkyl or cycloalkyl; R4 hydroxy; alkoxy; substituted or unsubstituted alkyl, cycloalkyl, alkenyl, alkynyl, phenyl or naphthyl; a substituted or unsubstituted 5- or 6-membered heterocyclic radical; or R3 and R4 together are -(CH2)n-Yp-(CH2)q-, where n and q are 1, 2 or 3, p is 0 or 1 and Y is oxygen, sulfur or N-methyl, or form a radical of the formula -(CH2)3-CO-, and their environmentally tolerated salts, X in formula Ib not being sulfur when R1 is 3-pyridyl, R2 is CO2CH2CH3 or R3 is hydrogen, and X in formula Ia X not being sulfur and R1 not being thien-2-yl when YR5 is OH, R3 is hydrogen and R4 is methyl, processes for manufacturing such compounds and herbicidal agents containing compounds of the formulae Ia or Ib as active ingredients.
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