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    Process of making thiazolines-3
    1.
    发明授权
    Process of making thiazolines-3 失效
    制备噻唑啉-3的方法

    公开(公告)号：US3700683A

    公开(公告)日：1972-10-24

    申请号：US3700683D

    申请日：1969-09-04

    Applicant: DEGUSSA

    Inventor： ASINGER FRIEDRICH ,  OFFERMANNS HERIBERT ,  GHYCZY MIKOLS

    IPC: C07D277/10 ,  C07D91/24

    CPC classification number: C07D277/10

    Abstract: 2,5,5-substituted thiazolines- Delta 3 of the formula IN WHICH R1 and R2 are alkyl and may be the same or different, alkyl having one to four carbon atoms are made by reacting an aldehyde of the formula WHEREIN R has the same meaning as above, with sulfur and ammonia or an ammonium or sulfur compound in the presence of a secondary or tertiary amine while azeotropically removing the reaction water. The process results in very high yields.

    Abstract translation: 具有1-4个碳原子的烷基，其中R 1和R 2为烷基并且可以相同或不同的具有1-4个碳原子的烷基的2,5,5-取代噻唑啉-D-3TA是通过使式WHEREIN R的醛与 如上所述，在仲胺或叔胺的存在下用硫和氨或铵或硫化合物，同时共沸除去反应水。

    Process of making penicillamine
    2.
    发明授权
    Process of making penicillamine 失效
    制备苯胺胺的方法

    公开(公告)号：US3888923A

    公开(公告)日：1975-06-10

    申请号：US28323372

    申请日：1972-08-23

    Applicant: DEGUSSA

    Inventor： ASINGER FRIEDRICH ,  GLUZEK KARL-HEINZ ,  OFFERMANNS HERIBERT

    IPC: C07C319/02 ,  C07C67/00 ,  C07C227/16 ,  C07C241/00 ,  C07C313/00 ,  C07C323/58 ,  C07C101/20 ,  C07C99/00

    CPC classification number: C07C227/16

    Abstract: Penicillamine or a derivative thereof is made by starting from 2-isopropyl-5,5-dimethylthiazolidine of the formula

    WHEREIN A is an ester group having one to five carbon atoms in the alcohol moiety, a carboxylic amide or thiocarboxylic amide group or one of the latter two groups which is mono- or disubstituted by alkyl of one to six carbon atoms or phenyl or wherein A is a carboxyl group. The starting compound is reacted with a carbonyl reagent in the presence of water and of a water immiscible inert organic solvent and the two phases formed in the reaction are then separated and the penicillamine or its derivative is isolated from the aqueous phase.

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