# US 5,344,953 A · Fluorobenzene derivatives

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- Number: US 5,344,953 A
- Document ID: US5344953A
- Status: Granted
- Kind: A
- Application number: 08/145,209
- Filed: 1993-11-03
- Granted: 1994-09-06
- Earliest claimed: 1991-01-22
- Assignees: Sagami Chemical Research Center; Kaken Pharmaceutical Co., Ltd.
- Inventors: Kenji Hirai; Tomoyuki Yano; Mitsuo Yamashita; Emiko Ejiri; Tomoko Tateno; Kiyomi Aizawa
- Web page: https://patentgrep.com/patent/US5344953A

## CPC

- C07D 263/44: Two oxygen atoms
- C07C 205/43: to carbon atoms of the same non-condensed six-membered aromatic ring or to carbon atoms of six-membered aromatic rings being part of the same condensed ring system
- C07C 219/34: having amino groups and esterified hydroxy groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton
- C07C 265/12: having isocyanate groups bound to carbon atoms of six-membered aromatic rings
- C07C 269/02: from isocyanates with formation of carbamate groups
- C07C 269/06: by reactions not involving the formation of carbamate groups
- C07C 271/28: to a carbon atom of a non-condensed six-membered aromatic ring
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS

## Abstract

Disclosed are fluorobenzene derivatives, which are important intermediates for producing herbicidal oxazolidinedione derivatives, and methods of producing them. The fluorobenzene derivatives include compounds of a formula (11): ##STR1## where X is a halogen atom, R.sup.3 is a nitro, amino or isocyanato group or R.sup.1 OCONH, and R.sup.1 is an alkyl or phenyl group. Via the intermediates of the invention, oxazolidinedione derivatives can be produced with high yield.

## Claims

### Claim 1

A compound of the formula (11) ##STR42## where X represents a halogen atom.

### Claim 2 (depends on 1)

A compound as claimed in claim 1, in which X is a chlorine atom.