Fungicidal Pyrimidine Compounds

A compound of formula I

• wherein:
• Ra2 is hydrogen, halogen, CN, NO2, OH, SH, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy, C1-C4-haloalkoxy, C1-C4-alkylthio, C1-C4-haloalkylthio, C1-C4-alkylsulfinyl, C1-C4-haloalkylsulfinyl, C1-C4-alkylsulfonyl, C1-C4-haloalkylsulfonyl, C1-C4-alkoxy-C1-C4-alkyl, C1-C4-alkoxy-C1-C4-alkoxy, C2-C4-alkenyl, C2-C4-alkynyl, C2-C4-haloalkenyl, C2-C4-haloalkynyl, C3-C8-cycloalkyl, C3-C8-cycloalkyloxy, C3-C8-cycloalkyl-C1-C4-alkyl, NRARB, C(═O)R′, C(═NOR″)R′″ or —C(═NH)—O—R′″;
• RA, RB independently of each other are hydrogen, C1-C4-alkyl, C2-C4-alkenyl, C2-C4-alkynyl, phenyl, benzyl, C3-C8-cycloalkyl, C3-C8-cycloalkenyl or —C(═O)—R′;
• R′ is hydrogen, OH, NH2, C1-C4-alkyl, C1-C4-haloalkyl, C2-C4-alkenyl, C2-C4-alkynyl, C1-C4-alkoxy, C1-C4-haloalkoxy, C1-C4-alkylamino or di(C1-C4-alkyl)amino;
• R″ is hydrogen, C1-C4-alkyl, C1-C4-haloalkyl, C2-C4-alkenyl, C2-C4-alkynyl or C1-C4-alkoxy-C1-C4-alkyl;
• R′″ is hydrogen or C1-C4-alkyl;
• Ra5, Ra6 together with two ring member carbon atoms to which they are attached, form a fused 5-membered saturated, partially unsaturated or aromatic carbocycle or heterocycle, wherein the ring member atoms of the fused heterocycle include besides carbon atoms 1, 2, 3 or 4 heteroatoms selected from the group of N and O and wherein the fused carbocycle or heterocycle is unsubstituted or carries 1, 2, 3 or 4 identical or different radicals selected from the group consisting of halogen, CN, C1-C4-alkyl, C1-C4-alkoxy, C1-C4-haloalkyl and C1-C4-haloalkoxy;
• R is hydrogen, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy, C1-C4-haloalkoxy, C1-C4-alkoxy-C1-C4-alkyl, C1-C4-haloalkoxy-C1-C4-alkyl, C2-C4-alkenyl, C2-C4-haloalkenyl, C2-C4-alkynyl, C2-C4-haloalkynyl, CN, CH2CN, NRARB or CH2—O—C(═O)R′;
• wherein
• RA,RB independently of each other are hydrogen, C1-C4-alkyl, C2-C4-alkenyl, C2-C4-alkynyl, phenyl, benzyl, C3-C8-cycloalkyl, C3-C8-cycloalkenyl or —(C═O)—R′;
• R′ is hydrogen, NH2, C1-C4-alkyl, C1-C4-haloalkyl, C2-C4-alkenyl, C2-C4-alkynyl, C1-C4-alkoxy, C1-C4-haloalkoxy, C1-C4-alkylamino or di(C1-C4-alkyl)amino;
• R1, R2 independently of each other are hydrogen, halogen, CN, OH, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy, C1-C4-haloalkoxy, C1-C4-alkoxy-C1-C4-alkyl, C1-C4-haloalkoxy-C1-C4-alkyl, C2-C4-alkenyl, C2-C4-haloalkenyl, C2-C4-alkynyl, C2-C4-haloalkynyl, C3-C8-cycloalkyl, C3-C8-cycloalkyl-C1-C4-alkyl, C3-C8-cycloalkyloxy, NRARB, C(═O)R′, C(═NOR″)R′″, —C(═NH)—O—R′″ or benzyl wherein the phenyl moiety of benzyl is unsubstituted or carries 1, 2, 3, 4, or 5 substituents selected from the group consisting of CN, halogen, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy, C1-C4-haloalkoxy, (C1-C4-alkoxy)carbonyl and di(C1-C4-alkyl)aminocarbonyl;
• or two radicals R1 and R2 that are bound to the same carbon atom form together with said carbon atom a saturated or partially unsaturated 3-, 4-, 5-, 6-, or 7-membered carbocycle or a saturated or partially unsaturated 3-, 4-, 5-, 6-, or 7-membered heterocycle, wherein the ring member atoms of the abovementioned heterocycle include beside carbon atoms 1, 2, 3 or 4 heteroatoms selected from the group of N, O and S, and wherein the abovementioned cycle is unsubstituted or carries 1, 2, 3 or 4 substituents selected from halogen, CN, OH, SH, C1-C4-alkyl, C1-C4-alkoxy or C1-C4-alkylthio;
• and one or two CH2 groups of the abovementioned cycles may be respectively replaced by one or two C(═O) or C(═S) groups;
• X is a divalent group selected from —CR3R4—, —C(═O)—, —C(═S)—, —C(═NRD)— and —C(═NORD)—, wherein
• RD is hydrogen or C1-C4-alkyl;
• R3 and R4 independently of each other are hydrogen, CN, C1-C4-hydroxyalkyl, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy, C1-C4-haloalkoxy, C1-C4-alkoxy-C1-C4-alkyl, C1-C4-haloalkoxy-C1-C4-alkyl, C2-C4-alkenyl, C2-C4-haloalkenyl, C2-C4-alkynyl, C2-C4-haloalkynyl, C3-C8-cycloalkyl, C3-C8-cycloalkyl-C1-C4-alkyl, C3-C8-cycloalkyloxy, NRARB, C(═O)R′, C(═NOR″)R′″, —C(═NH)—O—R′″ or benzyl wherein the phenyl moiety of benzyl is unsubstituted or carries 1, 2, 3, 4, or 5 substituents selected from the group consisting of CN, halogen, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy, C1-C4-haloalkoxy, (C1-C4-alkoxy)carbonyl and di(C1-C4-alkyl)aminocarbonyl, or
• two radicals R3 and R4 that are bound to the same carbon atom form together with said carbon atom a saturated or partially unsaturated 3-, 4-, 5-, 6-, or 7-membered carbocycle or a saturated or partially unsaturated 3-, 4-, 5-, 6-, or 7-membered heterocycle, wherein the ring member atoms of the abovementioned heterocycle include beside carbon atoms 1, 2, 3 or 4 heteroatoms selected from the group of N, O and S, and wherein the abovementioned cycle is unsubstituted or carries 1, 2, 3 or 4 substituents selected from halogen, CN, OH, SH, C1-C4-alkyl, C1-C4-alkoxy or C1-C4-alkylthio;
• and one or two CH2 groups of the abovementioned cycles may be respectively replaced by one or two C(═O) or C(═S) groups;
• n indicates the number of substituents Rb on the phenyl ring and n is 0, 1, 2, 3 or 4;
• Rb is halogen, CN, NO2, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy, C1-C4-haloalkoxy, C2-C4-alkenyl, C2-C4-haloalkenyl, C2-C4-alkynyl, C2-C4-haloalkynyl, NRARB, C(═NOR″)R′″ or —C(═NH)—O—R′″,
• it being possible for n=2, 3 or 4 that Rb are identical or different;
• Het is a 5- or 6-membered heteroaryl, wherein the ring member atoms of the heteroaryl include besides carbon atoms 1, 2, 3 or 4 heteroatoms selected from the group of N, O and S and wherein the heteroaryl is unsubstituted or carries 1, 2, 3 or 4 identical or different groups Rc:
• Rc is halogen, CN, NO2, NH2, C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy, C1-C6-alkylamino, di(C1-C6-alkyl)amino, C1-C6-alkylthio, C1-C6-haloalkylthio, C1-C6-alkylsulfinyl, C1-C6-haloalkylsulfinyl, C1-C6-alkylsulfonyl, C1-C6-haloalkylsulfonyl, C1-C6-alkoxy-C1-C4-alkyl, C1-C6-haloalkoxy-C1-C4-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C(═O)R′, C(═NOR″)R′″, C3-C8-cycloalkyl, C3-C8-cycloalkyl-C1-C4-alkyl, phenyl, phenoxy, phenoxy-C1-C4-alkyl or a 5- or 6-membered heteroaryl, wherein the ring member atoms of the heteroaryl include besides carbon atoms 1, 2, 3 or 4 heteroatoms selected from the group of N, O and S, and wherein the aforementioned cyclic radicals are unsubstituted or carry 1, 2, 3 or 4 identical or different substituents Rd:
• Rd is halogen, CN, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy or C1-C4-haloalkoxy;
• or two radicals Rc that are bound to adjacent ring member atoms of the Het group form together with said ring member atoms a fused
• 5-, 6- or 7-membered saturated, partially unsaturated or aromatic carbocycle or heterocycle, wherein the ring member atoms of the fused heterocycle include besides carbon atoms 1, 2, 3 or 4 heteroatoms selected from the group of N, O and S, and wherein the fused carbocycle or heterocycle is unsubstituted or carries 1, 2, 3 or 4 identical or different radicals groups Re:
• Re is halogen, CN, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy or C1-C4-haloalkoxy;
• and the N-oxides and the agriculturally acceptable salts of the compounds of formula I.