丁酸,4-氯-4,4-二氟-,乙基酯 、 sodium hydroxide 、 盐酸 在
Sodium sulfate-III 、 乙醚 作用下,
25.0 ℃
、146.65 kPa
条件下,
以12.6 g of 4-chloro-4,4-difluorobutyric acid are obtained in the form of a colourless oil of boiling point 88°-90° C./11 mbar的产率得到丁酸,4-氯-4,4-二氟-
Novel 4-chloro-4,4-difluorothiobutyric acid derivatives of the formula I ##STR1## in which R.sub.1 and R.sub.2 are, independently of one another, hydrogen, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 halogenoalkyl and R.sub.3 is hydrogen or an organic radical can be employed as pest-control agents. Control of insects and arachnids is possible and preferable.