Title:
PRODUCTION OF 3-FLUORO-4,6-DICHLOROTOLUENE
Document Type and Number:
Japanese Patent JPH07188076
Kind Code:
A
Abstract:
PURPOSE: To provide a two-stage method for providing a reaction mixture having a significantly increased content of 3-fluoro-4,6-dichlorotoluene.
CONSTITUTION: A method for producing 3-fluoro-4,6-dichlorotoluene with reduced formation of 3-fluoro-2,6-dichlorotoluene which comprises chlorinating 3- fluorotoluene in the presence of a Friedel-Crafts catalyst and sulfur to produce a mixture containing 3-fluoro-6-chlorotoluene and 3-fluoro-4-chlorotoluene, and chlorinating this mixture in the presence of a Friedel-Crafts catalyst and a thiazepine compound to thereby produce 3-fluoro-4,6-dichlorotoluene is provided.
Inventors:
BERUNAA BUSUMAN
Application Number:
JP31435994A
Publication Date:
July 25, 1995
Filing Date:
November 25, 1994
Export Citation:
Assignee:
BAYER AG
International Classes:
C07D285/36; C07B61/00; C07C17/12; C07C25/13; C07D267/14; C07D267/18; C07D267/20; (IPC1-7): C07C25/13; C07C17/12; C07D267/14; C07D267/18; C07D267/20
Attorney, Agent or Firm:
Heiyoshi Odashima