会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明授权
    • Preparation of N-substituted lactams
    • N-取代的内酰胺的制备
    • US5276165A
    • 1994-01-04
    • US982300
    • 1992-11-25
    • Hans-Juergen WeyerRolf Fischer
    • Hans-Juergen WeyerRolf Fischer
    • B01J21/04B01J23/28B01J23/34B01J23/72B01J23/75C07B61/00C07D201/02C07D201/08C07D207/26C07D207/267C07D209/46C07D209/64C07D223/10C07D225/02C07D207/12C07D221/06
    • C07D201/02C07D201/08C07D207/267
    • A process for the preparation of N-substituted lactams of the formula I ##STR1## where Z is C.sub.2 - to C.sub.10 -alkylene, C.sub.7 - to C.sub.12 -aralkylene, phenylene or naphthylene, andR.sup.1 is C.sub.1 - to C.sub.20 -alkyl, C.sub.6 - to C.sub.10 -aryl or C.sub.7 - to C.sub.12 -aralkyl,by hydrogenating a compound of the formula II ##STR2## where W is C.sub.2 - to C.sub.10 -alkylene, C.sub.2 - to C.sub.10 -alkenylene, C.sub.7 - to C.sub.12 -aralkylene, phenylene or naphthylene, andX and Y together form an oxa or imido bridge of the formula ##STR3## or alternatively are identical or different and are hydroxyl, C.sub.1 - to C.sub.20 -alkoxy, C.sub.6 - to C.sub.10 -aryloxy or C.sub.7 - to C.sub.12 -aralkoxy, and, if X and Y are different, Y, in addition to the abovementioned meanings, may also be hydrogen,at superatmospheric pressure and at elevated temperature in the presence of a catalyst and in the presence of an amine, which comprises using a secondary and/or tertiary amine of the formula IIINH.sub.n R.sub.3-n .sup.1where R.sup.1 is as defined above and n is 0 or 1, or a mixture of a secondary and/or teritary amine of this type with a primary amine of the formula IVR.sup.1 --NH.sub.2 (IV)as the starting material, and carrying out the reaction with addition of water and/or ammonia.
    • 制备式I的N-取代的内酰胺的方法(I)其中Z为C 2至C 10亚烷基,C 7至C 12 - 亚芳基,亚苯基或亚萘基,R 1为C 1 -C 20烷基 C 6 -C 10 - 芳基或C 7 - 至C 12 - 芳烷基,其中W是C 2 - 至C 10 - 亚烷基,C 2至C 10亚烯基,C 7 - 至C 12 - 亚烷基, - 亚烷基,亚苯基或亚萘基,X和Y一起形成下式的氧杂或亚氨基桥,或者可选地相同或不同,为羟基,C 1至C 20 - 烷氧基,C 6至C 10 - 芳氧基或C 7 - 对于C 12 - 芳烷氧基,并且如果X和Y不同,除了上述含义之外,Y还可以是氢,在超大气压和升高的温度下,在催化剂的存在下和在胺的存在下, 包括使用式III NH n R 3-n 1的仲和/或叔胺,其中R 1如上定义并且n为0或1,或者该仲胺和/或叔胺的混合物 以式ⅣR-NH2(Ⅳ)的伯胺为起始原料,并加入水和/或氨进行反应。