METHOD OF PRODUCING 3-(2,4-DICHLOROPHENYL)-2-(1,2,4-TRIAZO-1-LYL)-QUINAZOLIN-4-(3H)-ONE

摘要

Compounds of the formula: IMAGE where: A is oxygen or sulphur; R1 is phenyl or substituted phenyl in which the substituent is at least one member selected from the group consisting of halogen, C1-6-alkyl, C1-6-haloalkyl, C1-6-alkoxy, C1-6-haloalkoxy and nitro; R2 is 1-imidazoly of 1,2,4-triazol-1-yl; and R3, R4, R5 and R6, which may be the same or different, are each hydrogen, halo, C1-6-alkyl or C1-6-alkoxy have valuable fungicidal properties.