Method for the production of 1,3,5-trifluoro-2,4,6-trichlorobenzene from fluorobenzene derivatives

US7595426B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Michael Rack · Eppelheim, DE
• Sebastian Peer Smidt · Mannheim, DE
• Manuel Budich · Haßloch, DE
• Volker Maywald · Ludwigshafen, DE
• Michael Keil · Freinsheim, DE
• Bernd Wolf · Niederkirchen, DE

Key dates

• Filing date: Apr 21, 2006
• Grant date: Sep 29, 2009
• Expiry date: Oct 2, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C17/23
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Method for the production of 1,3,5-trifluoro-2,4,6-trichlorobenzene from fluorobenzene comprising steps A) and B): A) chlorination of fluorobenzene derivatives of formula (II), in which X=fluorine of H, Z=nitro, bromo or chloro and n=0 or 1-4 and B) fluorination of the distillation residue and separation by distillation of the 1,3,5-trifluoro-2,4,6-trichlorobenzene thus produced.