Biocide products from di:chloroacetic acid chloride or anhydride - which are 1-cyano-2,2-di:chloro:vinyl di:chloroacetate and di:chloromethyl-di:chloro:acetoxy-malono:di:nitrile

摘要

1-Cyano-2,2-dichlorovinyl dichloroacetate (I) and (dichloromethyl) Prepn. of a mixt. of (I) and (II) comprises reacting dichloroacetic acid chloride or anhydride with an equimolar amt. of an alkali, alkaline earth or ammonium cyanide at 0-100 degrees C, pref. in the presence of an inert organic solvent. (I), (II) an their mixtures are useful as biocides and as intermediates for biocides.