# US 5,349,098 A · Process for producing chlorofluorobenzenes

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- Number: US 5,349,098 A
- Document ID: US5349098A
- Status: Granted
- Kind: A
- Application number: 07/990,749
- Filed: 1992-12-15
- Granted: 1994-09-20
- Earliest claimed: 1988-08-26
- Assignees: Asahi Glass Company, Limited
- Inventors: Seisaku Kumai; Akihiro Wada; Shinsuke Morikawa
- Web page: https://patentgrep.com/patent/US5349098A

## CPC

- C07C 17/093: by replacement by halogens
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS

## Abstract

A process for producing chlorofluorobenzenes, which comprises reacting fluorine-containing nitrobenzenes of the following formula (1) with chlorine gas to obtain chlorofluorobenzenes of the following formula (2): ##STR1## wherein n and m are integers satisfying 1.ltoreq.n.ltoreq.3, 0.ltoreq.m.ltoreq.2 and 1.ltoreq.n+m.ltoreq.3.

## Claims

### Claim 1

A continuous process for producing chlorofluorobenzenes, which comprises reacting the nitrobenzene of formula (6) in the vapor phase with 0.1 to 20 mols per mol of the nitrobenzene of formula (6) chlorine gas at 380.degree.-450.degree. C. for 5-20 seconds to obtain a chlorofluorobenzene of formula (7): ##STR7## wherein Y.sup.1 is Cl and Y.sup.2 is H, or Cl.

### Claim 2 (depends on 1)

The process according to claim 1, wherein Y.sup.2 is hydrogen.

### Claim 3 (depends on 1)

The process according to claim 1, wherein the chlorine gas is present in an amount of from 1 to 5 mols per mol of the nitrobenzene of formula (6).