Halogenated hydrocarbons, useful as insecticide intermediates, and methods for their preparation
US4210611A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 1979 |
| Grant date | Jul 1, 1980 |
| Priority date | — |
| Expiry date | May 18, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C21/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Halogenated hydrocarbons of formula: EQU RR.sup.1 C.dbd.CH--CH.sub.2 CYZQ and EQU RR.sup.1 C.dbd.CH--CH.dbd.CYQ, and mixtures thereof, wherein Y is F, Cl or Br, R is hydrogen or a lower alkyl group, R.sup.1 is a lower alkyl group, Z is Y or Q and Q is W(CF.sub.2).sub.m -- in which W is hydrogen, F or Cl and m is 1 or 2, and a process for their preparation which comprises heating in a polar aprotic solvent, preferably in the presence of an alkali metal halide, a halogenated hydrocarbon of formula RR.sup.1 C--CHX--CH.sub.2 CYZQ wherein R,R.sup.1,Y,Z and Q have the previously defined meanings and X is Cl, Br or I, provided that X is always Br or I when at least one of Y and Z is Br.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.