Process for the preparation of 2,2-difluoroethylamine starting from prop-2-en-1-amine
    1.
    发明授权
    Process for the preparation of 2,2-difluoroethylamine starting from prop-2-en-1-amine 失效
    从丙-2-烯-1-胺开始制备2,2-二氟乙胺的方法

    公开(公告)号:US08766012B2

    公开(公告)日:2014-07-01

    申请号:US13292765

    申请日:2011-11-09

    摘要: A process for the preparation of 2,2-difluoroethylamine of the formula (I) CHF2CH2NH2  (I) comprising the stages (i) and (ii): stage (i): reaction of 2,2-difluoro-1-haloethane of the formula (II) CHF2—CH2Hal  (II) in which Hal is chlorine, bromine or iodine, with prop-2-en-1-amine of the formula (III) to give N-(2,2-difluoroethyl)prop-2-en-1-amine of the formula (IV) preferably in the presence of an acid scavenger, and stage (ii): removal of the allyl group from the N-(2,2-difluoroethyl)prop-2-en-1-amine of the formula (IV) obtained in stage (i) to give 2,2-difluoroethylamine of the formula (I) or a salt thereof.

    摘要翻译: 制备式(I)的2,2-二氟乙胺的方法包括步骤(i)和(ii)的步骤(i):阶段(i):2,2-二氟-1-卤代乙烷的反应 式(II)其中Hal为氯,溴或碘的CHF 2 -CH 2 Hal(II)与式(III)的丙-2-烯-1-胺反应,得到N-(2,2-二氟乙基)丙-2-醇 (IV)的1-烯-1-胺优选在酸清除剂的存在下,和阶段(ii):从N-(2,2-二氟乙基)丙-2-烯-1-醇中除去烯丙基 - 胺,得到式(I)中得到的式(Ⅳ)化合物,得到式(I)的2,2-二氟乙胺或其盐。

    PROCESS FOR THE PREPARATION OF 2,2-DIFLUOROETHYLAMINE STARTING FROM A BENZYLAMINE COMPOUND
    2.
    发明申请
    PROCESS FOR THE PREPARATION OF 2,2-DIFLUOROETHYLAMINE STARTING FROM A BENZYLAMINE COMPOUND 有权
    从苄腈化合物制备2,2-二氟乙烯胺的制备方法

    公开(公告)号:US20120123163A1

    公开(公告)日:2012-05-17

    申请号:US13292987

    申请日:2011-11-09

    IPC分类号: C07C209/62 C07C209/08

    摘要: Process for the preparation of 2,2-difluoroethylamine of the formula (I) CHF2CH2NH2  (I) comprising the stages (i) and (ii): stage (i): reaction of 2,2-difluoro-1-haloethane of the general formula (II) CHF2—CH2Hal  (II), with a benzylamine compound of the formula (III) in the presence of an acid scavenger, in which, in formula (II), Hal is chlorine, bromine or iodine, and, in the formulae (III), R1 is hydrogen or C1-C12-alkyl, and R2 is hydrogen, halogen, C1-C12-alkyl or C1-C6-alkoxy; stage (ii): catalytic hydrogenation of the N-benzyl-2,2-difluoroethanamine compound obtained in the stage (i) to give 2,2-difluoroethylamine of the formula (I) or a salt thereof.

    摘要翻译: 制备式(I)的2,2-二氟乙胺的方法包括阶段(i)和(ii)的CHF 2 CH 2 NH 2(I):阶段(i):一般的2,2-二氟-1-卤代乙烷的反应 式(II)CHF 2 -CH 2 Hal(II)与式(III)的苄胺化合物在酸清除剂的存在下反应,其中在式(II)中,Hal是氯,溴或碘,在 式(III)中,R 1是氢或C 1 -C 12烷基,R 2是氢,卤素,C 1 -C 12烷基或C 1 -C 6烷氧基; 阶段(ii):在阶段(i)中获得的N-苄基-2,2-二氟乙胺化合物的催化氢化,得到式(I)的2,2-二氟乙胺或其盐。