# US 4,392,929 A · Preparation of bis-(1-bromo-2,3,3-trichloro-2-propenyl) ether

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- Number: US 4,392,929 A
- Document ID: US4392929A
- Status: Granted
- Kind: A
- Application number: 06/288,443
- Filed: 1981-07-30
- Granted: 1983-07-12
- Earliest claimed: 1979-01-24
- Assignees: Nihon Tokushu Noyaku Seizo K.K.
- Inventors: Junichi Saito; Toyohiko Kume
- Web page: https://patentgrep.com/patent/US4392929A

## CPC

- C07C 43/17: containing halogen
- C07C 45/513: {the singly bound functional group being an etherified hydroxyl group}
- C07C 47/24: containing halogen
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS

## Abstract

Bis-(1-bromo-2,3,3-trichloro-2-propenyl) ether of the formula ##STR1## is produced by reacting bis-(2,3,3-trichloro-2-propenyl) ether of the formula ##STR2## with bromine under irradiation with light. The end product as produced may be steam distilled in situ, thereby recovering 2,3,3-trichloroacrolein.

## Claims

### Claim 1

A process for producing bis-(1-bromo-2,3,3-trichloro-2-propenyl) ether, comprising reacting bis-(2,3,3-trichloro-2-propenyl) ether of the formula ##STR11## with bromine under irradiation with light.

### Claim 2 (depends on 1)

A process according to claim 1, wherein the reaction is effected in a diluent or solvent.

### Claim 3 (depends on 1)

A process according to claim 1, wherein the reaction is effected at from about -20.degree. C. to the boiling point of the reaction mixture.

### Claim 4 (depends on 2)

A process according to claim 2, wherein the diluent or solvent is water or an aliphatic, alicyclic or aromatic hydrocarbon which may be optionally chlorinated, and the reaction is effected at from about 0.degree. to 100.degree. C.