Preparaion of 3.cyano-3,5,5-trimethylcyclohexanone
    3.
    发明授权
    Preparaion of 3.cyano-3,5,5-trimethylcyclohexanone 失效
    3.氰基-3,5,5-三甲基环己酮的制备

    公开(公告)号:US5516928A

    公开(公告)日:1996-05-14

    申请号:US395322

    申请日:1995-02-28

    IPC分类号: C07C253/10 C07C255/46

    CPC分类号: C07C253/10 C07C2101/14

    摘要: A process for the preparation of 3-cyano-3,5,5-trimethylcyclohexanone by the reaction of isophorone with hydrogen cyanide in the presence of quaternary ammonium catalysts at temperatures ranging from 80.degree. to 180.degree. C. and pressures ranging from 0.5 to 20 bar, in which the ammonium catalysts used are salts of the general formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4 denote C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.8 cycloalkyl, aryl, C.sub.7 -C.sub.18 aralkyl or C.sub.2 -C.sub.18 hydroxyalkyl andX denotes HCO.sub.3 or ##STR2## with the proviso that R.sup.4 stands for C.sub.1 -C.sub.8 alkyl when X is ##STR3##

    摘要翻译: 在季铵催化剂存在下,通过异佛尔酮与氰化氢反应制备3-氰基-3,5,5-三甲基环己酮的方法,温度范围为80-180℃,压力范围为0.5-20 其中使用的铵催化剂是通式I的盐,其中R 1,R 2,R 3,R 4表示C 1 -C 18烷基,C 5 -C 8环烷基,芳基,C 7 -C 18芳烷基或C 2-8芳烷基, C18羟烷基,X表示HCO3或者“IMAGE”,条件是当X为时,R4代表C1-C8烷基,