2-nitroaniline derivatives and hair dyeing compositions containing same

US5037446A · kind A · utility

Assignee

• Wella GmbH · DE

Inventors

• Eugen Konrad · Darmstadt, DE
• Thomas Clausen · Alsbach, DE
• Hans-Jurgen Braun · Frielendorf, DE
• Herbert Mager · Freiberg, DE

Key dates

• Filing date: Dec 12, 1988
• Grant date: Aug 6, 1991
• Expiry date: Dec 12, 2008

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61Q5/10
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The composition for dyeing hair yellow contains 2-nitroaniline derivatives of the general formula I: ##STR1## in which, R.sup.1 and R.sup.2 represent, independent of one another, hydrogen an alkyl of 1 to 4 carbon atoms, a monohydroxyallkyl of 2 to 4 carbon atoms or a dihydroxyalkyl of 3 or 4 carbon atoms, provided that R.sup.1 and R.sup.2 do not simultaneously represent alkyl groups of 1 to 4 carbon atoms, and X denotes an alkyl, monohydroxyalkyl, perfluoroalkyl or halogen. Also disclosed are new 2-nitroanitrile derivatives of the general formula II: ##STR2## in which R.sup.a and R.sup.b denote, independent of one another, ethyl, a monohydroxylalkyl of 2 to 4 carbon atoms or a dihydroxyalkyl of 3 or 4 carbon atoms, when Z is methyl, Cl or Br; or when Z is CH.sub.2 OH or a perfluoroalkyl, R.sup.a denotes hydrogen, a monohydroxyalkyl of 2 to 4 carbon atoms or a dihydroxyalkyl of 3 or 4 carbon atoms, and R.sup.b represents 2-hydroxyethyl or 2,3-dihydroxypropyl.