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    • 1. 发明公开
    • PROCESS FOR THE PREPARATION OF THIOL COMPOUNDS
    • VERFAHREN ZUR HERSTELLUNG VON THIOLVERBINDUNGEN
    • EP0825179A4
    • 2001-01-03
    • EP97903646
    • 1997-02-28
    • NIPPON CATALYTIC CHEM IND
    • HINO YOUICHIISHIKAWA RYUICHIWAKAO NORIHIRO
    • C07C319/04C07C323/52B01J31/02
    • C07C319/04C07C323/52
    • A process for preparing thiol compounds of general formula (2): HS-CH2-CHR1-COOR2 (wherein R1 is H or methyl and R2 is H or a C¿1?-C18 hydrocarbyl) by reacting an unsaturated compound of general formula (1): CH2=CR?1-COOR2¿ (wherein R?1 and R2¿ are each as defined above) with hydrogen sulfide, wherein at least one nitrogenous compound selected from the group consisting of amide compounds each bearing an unsubstituted amode group, amide compounds each bearing an N-substituent C¿1?-C6 hydrocarbyl, urea compounds each bearing an unsubstituted ureylene group, and urea compounds each substituted with a C1-C6 hydrocarbyl at at least either of the N- and N'-positions is present in the reaction system with a polysulfide compound of general formula (3): R?4OOC-CHR3-CH¿2-Sx-CH2-CHR3-COOR4 (wherein R3 is H or methyl; R4 is H or C¿1?-C18 hydrocarbyl; and x is an integer of 2 to 5) and/or sulfur. According to this process, the unsaturated compound can be reacted with hydrogen sulfide speedily to give the thiol compound at a high selectivity and in a high yield.
    • 为了通过使不饱和化合物和硫化氢之间的反应来制造硫醇化合物,不饱和化合物和硫醇化合物分别由下式(1)和(2)表示:CH 2 = CR 1 -COOR 2 其中R 1表示氢原子或甲基,R 2表示氢原子或碳原子数1〜18的烃基,(i )至少一种含氮化合物,其选自具有不具有取代基的酰胺基的酰胺化合物,各自具有氮原子具有1-6个碳原子的取代基的酰胺基的酰胺化合物,脲化合物 各自具有没有取代基的亚芳基,并且其中两个氮原子(N,N')中的至少一个具有1-6个碳原子的取代基的脲化合物,和(ii)多硫化合物或 硫或两者共同共存 反应系统,多硫化合物由下式(3)表示:R 4 OOC-CHR 3 -CH 2 -SX-CH 2 -CHR 3 -COOR 4其中R 3表示 氢原子或甲基,R 4表示氢原子或碳原子数1〜18的烃基,x表示2〜5的整数。通过这样做,不饱和化合物与 可以引起硫化氢,并且可以以高选择性和高产率生产硫醇化合物。