| 摘要 |
<p>Oxetane and thiaetane derivatives of formula (I), in which Q is oxygen, sulfur, -COO-, -Z-CH(R3)-COO-, (II), or CO-Y4-CH(R10)-COO-; W is (W1), (W2), (W3), (W4), (W5), (W6), (W7), (W8) or (W9); and R1 is hydrogen or fluorine; R2 is halogen or cyano; R3 and R10 independently of one another are hydrogen or C1-C3alkyl; R4 is hydrogen, fluorine, chlorine, bromine, C1-C4alkyl or trifluoromethyl; R5 and R7 independently of one another are C1-C4alkyl; R6 and R8 independently of one another are hydrogen or C1-C4alkyl; R9 is hydrogen, C1-C6alkyl, C3-C7cycloalkyl, C1-C4alkoxy-C1-C4alkyl or C1-C7haloalkyl; X is oxygen or sulfur; Y1, Y2, Y3, Y4, Y5 and Y6 independently of one another are oxygen or sulfur; Z is oxygen or sulfur; n is 0, 1, 2, 3 or 4; and q is 1 or 2, have good selective herbicidal properties when used pre- or post-emergence.</p> |
