Tiazolilmetil - pyrazoles, processes for their preparation, and their application in dyeing agents for keratin fibers

摘要

"Tiazolilmetil - pyrazoles, processes for their preparation, and their application in dyeing agents for keratin fibers.The present invention relates to 4,5 - diaminopirazu00f3is of general formula (I) in which R represents a group C1 - C6 - linear or branched alkyl chain.A group fenila insubstituu00eddo or a group fenila replaced one or more times, in which the substituents in the group fenila, independent of each other, may be selected from a halogen atom.An ester group of C1 - C6 - carboxylic acid, a group of C1 - C6 - alcu00f3xi in linear chain or branched from a group C1 - C6 - alcu00f3xi interrupted by one or two heterou00e1tomos, a group hidroxietu00f3xi,A group dihidroxipropu00f3xi or a nitrile group; agents containing these compounds for oxidation dyeing of keratin fibers, and processes for the preparation of these compounds.