(2,5)-Dichloro-(4)-bromophenylazo-(4)-chloro-phenyl sulphide - prepd. from (2,5)-dichloro-(4)-bromo-benzene diazonium chloride and a (4)-chloro-phenol salt and useful as an acaricide (BE 9.1.78)

摘要

sulphide of formula (I) is new (I) is a pest control agent, and is a stronger acaricide than 2,4,5-trichlorophenylazo-4-chlorophenyl sulphide (TCS) (I) is effective against phosphate-resistant tetranychidae and is more easily degradable than TCS. (I) is prepd. by diazolising 2,5-dichloro-4-bromoaniline in aq. HCl suspension and then reacting the diazo cpd. with a salt (pref. alkali metal salt) of 4-chlorothiophenol).