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    • 23. 发明授权
    • Preparation of secondary and tertiary 2-methyl-1, 5-pentanediamines
    • 二级和叔级2-甲基-1,5-戊二胺的制备
    • US06198002B1
    • 2001-03-06
    • US09324715
    • 1999-06-03
    • Karsten EllerBernd FiegeStefan RittingerEberhard Fuchs
    • Karsten EllerBernd FiegeStefan RittingerEberhard Fuchs
    • C07C20948
    • C07C211/09C07C209/48
    • A process for preparing a secondary or tertiary 2-methyl-1,5-pen-tanediamine of the formula I where R1 and R2 are H, C1-C20-alkyl, C3-C8-cycloalkyl, aryl, C7-C20-arylalkyl, where the radicals R1 and R2 may bear substituents selected from the group consisting of C1-C20-alkyl, C1-C20-alkoxy, C6-C20-aryloxy and hydroxy, and R1 and R2 are not simultaneously hydrogen, or R1 and R2 are together an unsubstituted or C1-C20-alkyl- and/or C1-C20-alkoxy-substituted C3-C7-alkylene chain which may, if desired, be interrupted by one or two O or NR3 groups, where R3 is H or C1-C20-alkyl comprises reacting 2-methylglutarodinitrile with a primary or secondary amine of the formula R1R2NH and hydrogen at from 50 to 250° C. and pressures of from 0.5 to 35 MPa in the presence of an oxidic supported catalyst comprising one or more noble metals which has been treated with hydrogen at from 50 to 300° C. for at least 0.5 hour before use. The compound 1,5-bis(dimethylamino)-2-methylpentane is also claimed.
    • 制备式I其中R 1和R 2的仲或叔2-甲基-1,5-辛烷二胺的方法是H,C 1 -C 20 - 烷基,C 3 -C 8 - 环烷基,芳基,C 7 -C 20 - 芳烷基,其中 基团R 1和R 2可以具有选自C 1 -C 20 - 烷基,C 1 -C 20 - 烷氧基,C 6 -C 20 - 芳氧基和羟基的取代基,并且R 1和R 2不同时为氢,或者R 1和R 2一起为未取代或未取代的 C 1 -C 20烷基 - 和/或C 1 -C 20 - 烷氧基取代的C 3 -C 7 - 亚烷基链,如果需要,可以被一个或两个O或NR 3基团中断,其中R 3是H或C 1 -C 20烷基, - 甲基戊二腈与式R1R2NH的伯胺或仲胺和50-250℃的氢气和0.5-35MPa的压力在包含一种或多种已经用氢处理过的贵金属的氧化载体催化剂存在下 在使用前至少0.5小时,从50至300℃。 还要求化合物1,5-双(二甲基氨基)-2-甲基戊烷。