2-Substituted Pyrimidines and Their Use as Pesticides

A 2-substituted pyrimidine of the formula I

• in which the indices and the substituents are as defined below:
• n is an integer from 1 to 5;
• L is halogen, cyano, cyanato (OCN), C1-C8-alkyl, C2-C8-alkenyl, C2-C8-alkynyl, C1-C6-alkoxy, C2-C8-alkenyloxy, C2-C8-alkynyloxy, C3-C6-cycloalkyl, C4-C6-cycloalkenyl, C3-C6-cycloalkyloxy, C4-C6-cycloalkenyloxy, nitro, —C(═O)-A, —C(═O)—O-A, —C(═O)—N(A′)A, C(A′)(═N-OA), N(A′)A, N(A′)-C(═O)-A, N(A″)—C(═O)—N(A′)A, S(═O)m-A, S(═O)m—O-A or S(═O)m—N(A′)A,
• m is 0, 1 or 2;
• A, A′, A″ independently of one another are hydrogen, C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C3-C8-cycloalkyl, C3-C8-cycloalkenyl, phenyl, where the organic radicals may be partially or fully halogenated or may be substituted by nitro, cyanato, cyano or C1-C4-alkoxy;
• or A and A′ together with the atoms to which they are attached are a five- or six-membered saturated, partially unsaturated or aromatic heterocycle which comprises one to four heteroatoms from the group consisting of O, N and S;
• where the aliphatic groups of the radical definitions of L for their part may be partially or fully halogenated or may carry one to four groups Ru:
• Ru is cyano, C1-C6-alkoxy, C3-C6-cycloalkyl, C2-C8-alkenyloxy, C2-C8-alkynyloxy, C4-C6-cycloalkenyl, C3-C6-cycloalkyloxy, C4-C6-cycloalkenyloxy
• —C(═O)-A, —C(═O)—O-A, —C(═O)—N(A′)A, C(A′)(═N-OA), N(A′)A, N(A′)-C(═O)-A, N(A″)—C(═O)—N(A′)A, S(═O)m-A, S(═O)m—O-A or S(═O)m—N(A′)A;
• R1, R2 independently of one another are C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C3-C6-cycloalkyl, C3-C6-halocycloalkyl, where the aliphatic groups of the radical definitions of R1 and R2 for their part may be partially or fully halogenated or may carry one to four groups Rv:
• Rv is cyano, C3-C6-cycloalkyl, C4-C6-cycloalkenyl, hydroxyl, C1-C6-alkoxy, C2-C8-alkenyloxy, C2-C8-alkynyloxy, C3-C6-cycloalkyloxy, C4-C6-cycloalkenyloxy, C1-C6-alkylthio, —C(═O)-A, —C(═O)—O-A, —C(═O)—N(A′)A, C(A′)(═N-OA), N(A′)A, N(A′)-C(═O)-A, N(A″)—C(═O)—N(A′)A, S(═O)m-A, S(═O)m—O-A or S(═O)m—N(A′)A or phenyl, where the phenyl moiety may carry one to three radicals selected from the group consisting of:
• halogen, C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C3-C6-cycloalkyl, C1-C6-haloalkyl, C1-C6-alkoxy, cyano, nitro, —C(═O)-A, —C(═O)—O-A, —C(═O)—N(A′)A, C(A′)(═N-OA), N(A′)A;
• R2 may additionally be hydrogen;
• R1 and R2 may also, together with the nitrogen atom to which they are attached, form a saturated or unsaturated five- or six-membered ring which may be interrupted by an ether —(—O—), carbonyl —(C═O)—, thio —(—S—), sulfoxyl —(—S[═O]—) or sulfenyl —(—SO2—) group or by a further amino —(—N(Ra)— group, where Ra is hydrogen or C1-C6-alkyl, and/or may comprise one or more substituents from the group consisting of halogen, C1-C6-alkyl, C1-C6-haloalkyl and oxy-C1-C3-alkyleneoxy;
• R3 is halogen, cyano, C1-C4-alkyl, C2-C4-alkenyl, C2-C4-alkynyl, C3-C6-cycloalkyl, C1-C4-alkoxy, C3-C4-alkenyloxy, C3-C4-alkynyloxy, C1-C6-alkylthio, di-(C1-C6-alkyl)amino or C1-C6-alkylamino, where the alkyl, alkenyl and alkynyl radicals of R3 may be substituted by halogen, cyano, nitro, C1-C2-alkoxy or C1-C4-alkoxycarbonyl;
• X is a group —CH—Ra—, NRb—, —O— or —S—;
• Ra may be hydrogen, halogen, C1-C6-alkyl, C1-C6-alkoxy, cyano or C1-C6-alkoxycarbonyl;
• Rb is hydrogen, C1-C6-alkyl or C3-C6-cycloalkyl;
• T is a group —CH—Ra—;
• p is an integer from 1 to 4;
• Y is a group —CH—Ra— or —N—Rb—
• o is or 1;
• Z is O, S or a group N(Rc)
• Rc is hydrogen, C1-C6-alkyl or C1-C6-alkoxy.