Microbiocidal thiazole derivatives

A compound of formula (I):

• wherein,
• Y is C—F, C—H or N;
• R1 is hydrogen, halogen, cyano, C1-C4alkyl, C1-C4alkoxy, C1-C4haloalkyl, or HC(O)NH—;
• R2 is C1-C8alkyl, C1-C8haloalkyl, C1-C8alkoxy, C3-C8cycloalkyl, C3-C8cycloalkylC1-C2alkyl (wherein the cycloalkyl groups are optionally substituted with 1 to 3 groups represented by R3), phenyl, phenylC1-C2alkyl (wherein the phenyl rings are optionally substituted with 1 to 3 groups represented by R3), heteroaryl, heteroarylC1-C2alkyl, wherein the heteroaryl is a 5- or 6-membered aromatic monocyclic ring comprising 1, 2, 3 or 4 heteroatoms individually selected from nitrogen, oxygen and sulfur, heterocyclyl, heterocyclylC1-C2alkyl, wherein the heterocyclyl is a 4-, 5- or 6-membered non-aromatic monocyclic ring comprising 1, 2 or 3 heteroatoms individually selected from nitrogen, oxygen and sulfur, or a 5- to 12-membered non-aromatic annulated or spirocyclic carbobi- or carbotri-cyclyl ring system optionally comprising 1, 2, 3, 4 or 5 heteroatoms individually selected from nitrogen, oxygen and sulfur, and wherein the spirocyclic carbobi- or carbotri-cyclyl ring systems are each optionally bonded to the rest of the molecule through a C1-C2alkylene linker;
• R3 is halogen, C1-C4alkyl, C1-C4alkoxy, C1-C4haloalkyl, C3-C8cycloalkyl or C3-C8cycloalkylC1-C2alkyl;
• X is N or C—H;
• or a salt or an N-oxide thereof.