THIOL DYES

摘要

Disclosed are thiol dyes of formula (1), wherein R₁ is hydrogen; C₁-C₁₂alkyl; or phenyl-C₁-C₄alkyl; X is C₁-C₁₂alkylene; C₂-C₁₂alkenylene; C₅-C₁₀cycloalkylene; C₅-C₁₀arylene; or C₅-C₁₀arylene- C₁-C₁₀alkylene; Y is the residue of an organic dye which corresponds to the formula (1a), wherein R₂ is hydrogen; or C₁-C₅alkyl; R₃ is a radical of formula (1a₁) : (1a₂); or (1a₃) ; or R₂ and R₃ together with the linking carbon atom ¹C form a 6 to 10 membered carbocyclic ring which may optionally be a condensated aromatic system and may contain one or more than one hetero atom; and R₄, R₅ and R₆ independently form each other are hydrogen, or C₁-C₅alkyl; Z is H; or a thio ester group of formula (1b), wherein A is O; S; or N-R9; B is -OR7; -NR7R8, or -SR7; and A is O; S; or N-R₉; B is -OR₇; -NR₇R₈, or -SR₇; and R₇, R₈ and R₉, independently from each other are hydrogen; C₁-C₁₂alkyl C₆-C₁₂aryl; or C₆-C₁₂aryl- C₁-C₁₂alkyl. The compounds are useful for the dyeing of organic materials, such as keratin fibers, preferably human hair.