# US 4,393,246 A · Process for brominating side chain of m-phenoxytoluene

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- Number: US 4,393,246 A
- Document ID: US4393246A
- Status: Granted
- Kind: A
- Application number: 06/316,448
- Filed: 1981-10-29
- Granted: 1983-07-12
- Earliest claimed: 1980-11-21
- Assignees: Toyo Soda Manufacturing Co., Ltd.
- Inventors: Masashige Kubo; Mitsuaki Yoshimitsu; Kanzi Katsuragawa
- Web page: https://patentgrep.com/patent/US4393246A

## CPC

- C07C 41/22: by introduction of halogens; by substitution of halogen atoms by other halogen atoms
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS

## Abstract

A side chain of m-phenoxytoluene is brominated with a polyhalogenated ethane having the formula ##STR1## wherein W and Z respectively represent Cl or Br and X and Y respectively represent Cl, Br or H, as a brominating agent in a liquid phase in the presence of an amorphous carbon.

## Claims

### Claim 1

In a process for brominating a side chain of m-phenoxytoluene with a polyhalogenated ethane having the formula ##STR6## wherein W and Z respectively represent Cl or Br and X and Y respectively represent Cl, Br or H, as a brominating agent, the improvement consisting of carrying out said bromination in the liquid phase in the presence of an amorphous carbon.

### Claim 2 (depends on 1)

The process according to claim 1 wherein said bromination is carried out at 100.degree. to 270.degree. C.

### Claim 3 (depends on 1)

The process according to claim 1 wherein said bromination is carried out at 130.degree. to 250.degree. C.

### Claim 4 (depends on 1)

The process according to claim 1 wherein said amorphous carbon is activated carbon.

### Claim 5 (depends on 1)

The process according to claim 1 wherein said bromination is carried out in an inert solvent of chlorobenzene, dichlorobenzene, bromobenzene or diphenyl ether.