Pyrazolylacrylsäure-Derivate, verwendbar als systemische Fungiziden in Pflanzen- und Materialschutz

A pyrazolyl acrylic acid derivative having plant fungicidal activity of formula (I): wherein: R1 and R2 are independently hydrogen or C1 - C5 alkyl; A is a group of the formula: wherein X is independently hydrogen; halogen, cyano; nitro; C1 - C10 alkyl, C2 - C11 alkenyl, C1 - C10 alkoxy, C2 - C11 alkenyloxy, C2 - C11 alkynyloxy, C2 - C11 alkylcarbonyl or C2 - C11 alkylcarbonyloxy optionally substituted with one or more substituents selected from halogen, nitro, cyano, trifluoromethyl and C1 - C5 alkoxy; - C13 arylcarbonyloxy, C6 = C12 aryl, C6 - C12 aryloxy, C2 - C13 heteroaryl having 1 - 3 heteroatom(s) selected from oxygen, sulfur, and nitrogen, C2 - C13 heteroaryloxy having 1 - 3 heteroatom(s) selected from oxygen, sulfur, and nitrogen, C7 - C12 aralkyl or C7 - C12 aralkyloxy optionally substitutes with one or more substituents selected from halogen, nitro, cyano, trifluoromethyl, C1 - C5 alkyl, and C1 - C5 alkoxy; m is 1 or 2; and n is a integer of 1 - 5; or two Xs may form a fused ring together with the benzene ring or thiazole ring to which they are attached; and B is methoxycarbonyl or cyano. h