Syngenta Crop Protection, Inc.

John J Taylor

Harald Walter

Paul A Worthington

Daniel Stierli

Compounds of the formula (I) in which the substituents are as defined in claimare suitable for use as microbiocides. Formula (I), wherein X is oxygen or sulfur; A is a 5- or 6-membered heterocyclic ring containing one to three heteroatoms, each independently selected from oxygen, nitrogen and sulphur, or a phenyl ring; the heterocyclic ring or the phenyl being substituted by the groups R, Rand R; R, Rand Rare each, independently, hydrogen, halogen, cyano, nitro, Calky, Chalogenalkyl, Chalogenalkoxy, Calkoxy(C)alkyl or Chalogenalkoxy(C)alkyl, provided that at least one of R, Rand Ris not hydrogen; B is a phenyl, naphthyl or quinolinyl group, which is substituted by one or more substituents R. 

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Bracknell, United Kingdom

John J Taylor