insecticides and acaricide preparation on the basis of benzimidazolderivaten

摘要

1,268,000. Benzimidazoles. ELI LILLY & CO. 2 May, 1969 [3 May, 1968], No. 57613/70. Divided out of 1,267,998. Heading C2C. Compounds of formulae wherein Y is hydrogen or fluorine and Z is hydrogen, fluorine, chlorine, -CF 3 or -CF 2 CF 3 , are prepared by cyclization of a corresponding o - phenylene diamine by heating with a compound of formula Z-CF 2 -COOH. The products have insecticidal and acaricidal activity. 3 - Nitro - 5 - trifluoromethyl - o - phenylene diamine is prepared by reaction of 2,6-dinitro- 4 - trifluoromethyl - 1 - chlorobenzene with ammonium hydroxide to give 2,6-dinitro-4-trifluoromethylaniline, followed by reaction of this with ammonium polysulphide. Reference has been directed by the Comptroller to Specifications 1,087,561 and 1,159,789.