Imperial Chemical Industries Limited

Roger K Huff

David J Milner

David Holland

David D Evans

Nicholas H Anderson

A compound of the formula ##STR1## wherein one of Y and Z is a perhaloalkyl group having 1 to 2 carbon atoms and the other is halogen or methyl; and R is OR.sup.1 in which R.sup.1 represents a phenoxybenzyl group optionally substituted in the alpha position by a cyano or ethynyl group.

Halogenated esters

A compound of formula: ##STR1## wherein one of R.sup.1 and R.sup.2 represents a group of formula

A compound of formula: ##STR1## wherein one of R.sup.1 and R.sup.2 represents a group of formula:

Polyhalogenated hydrocarbons of general formula RR.sup.1 CH--CHX--CH.sub.2 CYZQ wherein R is hydrogen or lower alkyl, R.sup.1 is lower alkyl, X is Cl, Br or I, Y is F, Cl or Br, Z is Y or Q and Q is a group W(CF.sub.2).sub.m --in which W is hydrogen, F or Cl and m is 1 or 2, provided that X is always Br or I when at least one of Y and Z is Br, and a process for preparing these polyhalogenated hydrocarbons by reacting an alkyl-substituted butene with a polyhalogenated alkane having from 2 to 4 carbon atoms, in the presence of a catalyst.

Polyhalogenated hydrocarbons, useful as insecticide intermediates, and

Compounds of the formula ##STR1## wherein R.sup.1 is an alkenyloxy group; an alkoxy group optionally substituted by one or more phenyl radicals or atoms of fluorine, chlorine, bromine or iodine; a phenoxy group optionally substituted by one or more lower alkyl or lower alkoxy groups or atoms of fluorine, chlorine, bromine or iodine; an alkylthio group optionally substituted by one or more phenyl radicals; a phenylthio radical optionally substituted by one or more atoms of fluorine, chlorine, bromine or iodine, or lower alkyl, lower alkoxy, of lower haloalkyl radicals; or an amino radical optionally substituted by one or two alkyl radicals, each of which may optionally be substituted by one or more alkoxy radicals or phenyl radicals; and R.sup.2 is a phenyl radical optionally substituted by one or more atoms of fluorine, chlorine, bromine or iodine or by one or more lower haloalkyl radicals, or by one or more phenoxy radicals optionally substituted by one or more atoms of fluorine, chlorine, bromine, or iodine, or by one or more lower haloalkyl groups. The compounds are useful for controlling insect pests.

Insecticidal compound and method of use

Insectically active oxadiazindione derivatives of the formula: ##STR1## wherein R.sup.1 is 2-chlorophenyl, 4-chlorophenyl, 2,6-dichlorophenyl, 3,5-dichlorophenyl, 2,6-difluorophenyl, 3-nitrophenyl, 3-trifluoromethylphenyl, 2-tolyl or 3,5-xylyl, and R.sup.2 is phenyl or phenyl substituted by methyl, methoxy, chlorine, fluorine, or nitro, provided that at least one of R.sup.1 and R.sup.2 is a chloro-or fluoro-substituted phenyl group.

Growing community of inventors

Wokingham, United Kingdom

Roger K Huff