4-ALKYL- AND 4-ALLYL-THIO-, SULFINYL- AND SULFONYL-METHYL-2-AMINO-6-N,N'-DIMETHYLCARBAMOYLOXY PYRIMIDINES, PROCESS FOR THEIR PREPARATION, COMPOSITIONS CONTAINING THEM AND THEIR USE AS INSECTICIDES

摘要

Compounds of the formula I (I) wherein R1 is C1-C4-alkyl or allyl, R2 is hydrogen, methyl or ethyl, R3 is methyl, ethyl or cyclopropyl, R4 is hydrogen or methyl and n is zero, 1 or 2 having valuable insecticidal in particular aphicidal properties.