Process for the side-chain chlorination of perhalogenated methyl aromatic compounds

US4212996A · kind A · utility

Assignee

• Dynamit Nobel GmbH · DE

Inventors

• Egon N. Petersen · Neunkirchen, DE
• Hermann Richtzenhain
• Klaus Schrage · Hennef (Sieg), DE

Key dates

• Filing date: May 15, 1978
• Grant date: Jul 15, 1980
• Expiry date: May 15, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C17/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Process for the side-chain chlorination of aromatic compounds completely halogenated in the nucleus, containing methyl groups, and having the general formulas: ##STR1## wherein y=1 or 2, z=0 to 1, x=6-(y+z), n=0 to 8 and k=(8-n) and the methyl groups are, respectively, in the ortho, meta or para position to one another and in the p-position to the oxygen bridge, by thermal chlorination in the liquid phase. The bis-monochloromethyl compounds of formula (II) are novel compounds. The chlorination products are useful as intermediates.