ZWITTERIONIC DERIVATIVES OF BENZOQUINONEMONOIMINES, COLORING COMPOSITIONS CONTAINING SAME AND USE THEREOF

摘要

The invention relates to synthetic organic chemistry, more particularly to novel zwitterionic derivatives of benzoquinonemonimines, coloring compositions containing same and the uses thereof as colorants or dyes, especially hair dyes. Compounds of general formula (I) wherein R represents an alkyl or aryl group.