Polyhalogenated hydrocarbons, useful as insecticide intermediates, and methods for their preparation
AssigneeImperial Chemical Industries PLC
InventorsDavid Holland, David J. Milner, Roger K. Huff
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Abstract
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.
Claims3
Polyhalogenated hydrocarbons of general formula:
- ##STR13## wherein R is hydrogen or a lower alkyl group,
- R.sup.1 is lower alkyl,
- X is chloro, bromo or iodo,
- Y is fluoro, chloro or bromo,
- Z is Y or Q, and
- Q is a group of formula W(CF.sub.2).sub.m --
- wherein W is hydrogen, fluoro or chloro and m is 1 or 2, provided that X is always bromo or iodo when at least one of Y and Z is bromo.
5-Methyl-2,2,4-trichloro-1,1,1-trifluorohexane.
Dependencies are inferred from the claim text.