Use of substituted oxadiazoles for combating phytopathogenic fungi

An agrochemical composition comprising an auxiliary and a compound of formula I

• wherein:
• A is phenyl or a 5- or 6-membered aromatic heterocycle, wherein the ring member atoms of the heterocyclic ring include besides carbon atoms 1, 2, 3 or 4 heteroatoms selected from N, O and S as ring member atoms;
• and wherein the cyclic groups A are unsubstituted or substituted by 1, 2, 3 or 4 identical or different groups RA;
• wherein
• RA is halogen, cyano, NO2, OH, SH, NH2, C1-C6-alkyl, C1-C6-alkoxy, C1-C6-alkylthio, C1-C6-alkylsulfinyl, C1-C6-alkylsulfonyl, C2-C6-alkenyl, C2-C6-alkynyl, C3-C8-cycloalkyl or C3-C8-cycloalkoxy;
• and wherein the aliphatic and alicyclic moieties are unsubstituted or substituted by 1, 2, 3 or 4 identical or different groups Ra;
• wherein
• Ra is halogen, cyano, NO2, OH, SH, NH2, C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy, C1-C6-alkylthio, C1-C6-haloalkylthio or C3-C8-cycloalkyl, C1-C4-alkoxy-C1-C4-alkyl;
• Y is O or S;
• W is NR1R2;
• wherein
• R1, R2 independently of each other are hydrogen, C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C3-C6-cycloalkyl, C3-C6-cycloalkenyl, C(═O)—(C1-C6-alkyl), C(═O)—(C1-C6-alkoxy), phenyl-C1-C4-alkyl, heteroaryl-C1-C4-alkyl, phenyl, naphthyl or a 3- to 10-membered saturated, partially unsaturated or aromatic mono- or bicyclic heterocycle, wherein the ring member atoms of said mono- or bicyclic heterocycle include besides carbon atoms further 1, 2, 3 or 4 heteroatoms selected from N, O and S as ring member atoms and wherein 1 or 2 carbon ring member atoms of the heterocycle may be replaced by 1 or 2 groups independently selected from C(═O) and C(═S);
• and wherein the heteroaryl group in heteroaryl-C1-C4-alkyl is a 5- or 6-membered aromatic heterocycle, wherein the ring member atoms of the heterocyclic ring include besides carbon atoms 1, 2, 3 or 4 heteroatoms selected from N, O and S as ring member atoms;
• and wherein any of the above-mentioned aliphatic or cyclic groups are unsubstituted or substituted by 1, 2, 3 or up to the maximum possible number of identical or different groups R1a;
• or R1 and R2 together with the nitrogen atom to which they are bound form a saturated or partially unsaturated mono- or bicyclic 3- to 10-membered heterocycle, wherein the heterocycle includes beside one nitrogen atom and one or more carbon atoms 1, 2 or 3 heteroatoms independently selected from N, O and S as ring member atoms;
• and wherein one or two CH2 groups of the heterocycle may be replaced by one or two groups independently selected from the group of C(═O) and C(═S);
• and wherein the heterocycle is unsubstituted or carries 1, 2, 3, 4 or up to the maximum possible number of identical or different groups R1a;
• wherein
• R1a is halogen, cyano, NO2, OH, SH, NH2, C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy, C1-C6-alkylthio, C1-C6-haloalkylthio, C3-C8-cycloalkyl, NHSO2-C1-C4-alkyl, —(C═O)C1-C4-alkyl, C(═O)—C1-C4-alkoxy, C1-C6-alkylsulfonyl, hydroxyC1-C4-alkyl, C(═O)—NH2, C(═O)—NH(C1-C4-alkyl), C1-C4-alkylthio-C1-C4-alkyl, aminoC1-C4-alkyl, C1-C4-alkylamino-C1-C4-alkyl, diC1-C4-alkylamino-C1-C4-alkyl, aminocarbonyl-C1-C4-alkyl or C1-C4-alkoxy-C1-C4-alkyl;
• or an N-oxide or an agriculturally acceptable salt thereof.