| 摘要 |
Fungicidal compounds of formula (I): where X is O or S; RING is phenyl or thienyl; Het is a 5- or 6-membered heterocyclic ring containing one to three heteroatoms, each independently selected from oxygen, nitrogen and sulphur, the ring being substituted by one to four groups R4 ; R1 is hydrogen, optionally substituted (C1-4)alkyl, formyl, optionally substituted (C1- 4)alkylC(=O), optionally substituted (C1-4)alkylC(=O)O, optionally substitut ed (C1-4)alkoxy(C1-4)alkyl, optionally substituted allyl, optionally substitute d propargyl or optionally substituted allenyl; each R2 is, independently, halogen, optionally substituted (C1-4)alkyl, optionally substituted (C1- 4)alkoxy or optionally substituted (C1-4)alkoxy(C1-4)alkyl; R3 is (CRaRb)m_C y- (CRCRd )n-Y; each R4 is, independently, selected from halogen, C1-3 alkyl, C 1- 3 haloalkyl, C1-3 alkoxy(C1-3)alkyl and cyano; Ra, Rb, Rc and Rd are each, independently, hydrogen or optionally substituted (C1-4)alkyl; Cy is an optionally substituted carbocyclic or heterocyclic 3-7 membered ring which m ay be saturated, unsaturated or aromatic and which optionally contains a silico n atom as a ring member; (CRaRb)m and (CRcRd)n may be bound either to the same carbon or silicon atom of Cy or to different atoms separated by 1, 2 or 3 ri ng members; Y is Si(OpZ1)(OqZ2)(OsZ) and provided that Cy contains a silicon atom as a ring member then Y may also be hydrogen; Z is C1-4 alkyl or C2-4 alkenyl (each of which is optionally interrupted by one heteroatom selected from O, S and N and is optionally substituted by one to three independently selected halogen atoms); Z1 and Z2 are, independently, methyl or ethyl; in a nd n are each, independently, 0, 1, 2 or 3; p, q and s are each, independently, 0 or 1; and r is 0, 1 or 2; or an N-oxide thereof; novel intermediates used in the preparation of these compounds, agrochemical compositions which comprise at least one of the novel compounds as active ingredient and the use of the active ingredients or compositions in agriculture or horticulture for controlling or preventing infestation of plants by phytopathogenic microorganisms, preferably fungi.
|
