Process for the production of 5-alkoxy-2,4-dinitro-alkylbenzenes

US5382702A · kind A · utility

Assignee

• Wella GmbH · DE

Inventors

• Wolfgang Balzer · Alsbach, DE
• Thomas Clausen · Alsbach, DE
• Alexa Weinges · Heidelberg, DE

Key dates

• Filing date: Nov 19, 1993
• Grant date: Jan 17, 1995
• Expiry date: Nov 19, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C201/12
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Process for producing 5-alkoxy-2,4-dinitroalkylbenzenes of the general formula (I) ##STR1## R.sup.1 =C.sub.1 to C.sub.4 alkyl; R=C.sub.1 to C.sub.6 alkyl group, C.sub.2 to C.sub.4 hydroxyalkyl, C.sub.3 to C.sub.4 dihydroxyalkyl, in which a 3-fluoroalkylbenzene is nitrated and the obtained 2,4-dinitro-5-fluoroalkylbenzene is then reacted with a suitable alcohol at -5.degree. C. to +25.degree. C. with the addition of sodium hydroxide or potassium hydroxide.