Fungicidal pyrimidine derivatives

1. Field of the Invention Fungicidal pyrimidine derivatives and the use as a fungicide of the compounds of formula (1): wherein Ris H, C-Calkyl, C-Calkenyl, C-Calkynyl C-Ccycloalkyl, C-Calkoxy, C-Ccycloalkoxy, C-Calylthio, C-Calkylsulfinyl, C-Calkylsulfonyl, phenyl, pyridinyl or azolyl groups, (being optionally substituted by one or more substituents); or N(R)C(O)R, Ris polyfluoroalkyl, Ris fluorine, chlorine, bromine or iodine; ethenyl or ethynyl (being optionally substituted by one or more of halogen), Rand Rare, independently, H, C-Calkyl, C-Calkenyl or C-Calkynyl groups, (being optionally substituted by one or more of halogen or cyano); or Rand Rcan join together to form a 5 or 6-membered ring, Q is a heteroaromatic ring selected from the following ring system; imidazol-1-yl, pyrazol-1-yl, 1,2,3-triazol-1-yl, 1,2,3-triazol-2-yl, 1,2,4-triazol-1-yl, 1,2,4-triazol-1-yl, benzimidazol-1-yl or tetrazol-5-yl groups, (being optionally substituted by one or more of substituents).