Provision of [challenges] thiol dye. [MEANS FOR SOLVING PROBLEMS] Equation [1] of In the formula, Carbon atoms alkyl of 1 to 12 hydrogen atom R 1 is phenyl or - carbon atoms to 1 represents an alkyl group having 1 to 4 The X, carbon atoms 1 to 12 alkylene C 2 carbon atoms 12 alkenylene carbon atoms 5 to cycloalkylene group of 10 carbon atoms 5 arylene 10ve no carbon atoms or 5 The arylene - 10 carbon atoms 1 to represents an alkylene group of 10 Formula Y is embedded image (In the formula, Hydrogen atom and R 2 the carbon atoms 1 or to an alkyl group having 5 Formula R 3 is [Image Omitted] The or represents a group represented by the formula And R 3 and R 2, taken together with the carbon atom 1 C bonded, but not 6 may comprise one or more heteroatoms and give, to to form a carbocyclic ring of 10 members is a fused aromatic system optionally Independently of one another are carbon atoms or one hydrogen atoms and R 6 4, R 5 R represents an alkyl group of 5. Represents the residue of an organic dye which corresponds to) H Z is or formula [Image Omitted] (In the formula, The A, O represents the N-R 9 or S The B, 7 -OR and represent -SR 7 or -NR 7 R 8 Independently of one another, a hydrogen atom and R 9 7, R 8 R is carbon atoms alkyl of 1 to 12 C 6 carbon atoms 12 aryl C 6 carbon atoms or aryl of 12 - carbon atoms and is C 1 to an alkyl group of 12. I represent a thioester group represented by). I disclose the thiol dye represented by]. Keratin fibers, the compounds are useful in the dyeing of organic materials such as the hair, preferably human. None [Selection Figure]【課題】チオール染料の提供。【解決手段】式【化1】[式中、R1は、水素原子;炭素原子数1ないし12のアルキル基;又はフェニル-炭素原子数1ないし4のアルキル基を表わし;Xは、炭素原子数1ないし12のアルキレン基;炭素原子数2ないし12のアルケニレン基;炭素原子数5ないし10のシクロアルキレン基;炭素原子数5ないし10のアリーレン基;又は炭素原子数5ないし10のアリーレン-炭素原子数1ないし10のアルキレン基を表わし;Yは、式【化2】(式中、R2は、水素原子;又は炭素原子数1ないし5のアルキル基を表わし;R3は、式【化3】で表わされる基を表わすか;又は、R2及びR3は、結合している炭素原子1Cと一緒になって、所望により縮合芳香族系であり得、かつヘテロ原子を1つ以上含み得る6ないし10員の炭素環を形成し;R4、R5及びR6は、互いに独立して、水素原子又は炭素原子数1ないし5のアルキル基を表わす。)に相当す
