Process for the preparation of unsaturated cyanocarbonyl compounds
    2.
    发明授权
    Process for the preparation of unsaturated cyanocarbonyl compounds 失效
    不饱和氰基羰基化合物的制备方法

    公开(公告)号:US3960924A

    公开(公告)日:1976-06-01

    申请号:US557380

    申请日:1975-03-11

    CPC分类号: C07C255/00

    摘要: The compounds ##EQU1## wherein each of R.sub.1 and R.sub.2 is H or alkyl of 1 to 5 carbon atoms, a cycloalkyl group of 5 to 10 carbon atoms or R.sub.1 and R.sub.2 bonded together through two adjacent carbon atoms form a saturated cycloaliphatic ring of 5 to 12 carbon atoms, are prepared by step (1) reacting acrylonitrile with isobutyraldehyde in the liquid phase to form 2,2-dimethyl-4-cyanobutyraldehyde and step (2) by reacting 2,2-dimethyl-4-cyanobutyraldehyde with a carbonyl compound of the general formula ##EQU2## wherein R.sub.1 and R.sub.2 are as defined above, wherein step (a) and step (b) are undertaken in the presence of a catalyst which is piperidine or a primary amine and/or a Schiff base and in the presence of an acid compound.

    摘要翻译: 化合物CH3 | NC-CH2-CH2-C-CH = CC-R2 || PARALLEL CH3R1O其中R 1和R 2各自为H或1至5个碳原子的烷基,5至10个碳原子的环烷基或R 1和 通过步骤(1)将丙烯腈与异丁醛在液相中反应以形成2,2-二甲基-4-氰基丁醛和步骤(2),通过两个相邻的碳原子键合在一起形成5至12个碳原子的饱和脂环族环 )通过使2,2-二甲基-4-氰基丁醛与通式R 2 | C = O | CH 2 -R 1的羰基化合物反应,其中R 1和R 2如上定义,其中步骤(a)和步骤(b) 在催化剂存在下,在哌啶或伯胺和/或席夫碱存在下,并在酸化合物存在下进行。

    Process for preparing 2-pyrrolidones
    4.
    发明授权
    Process for preparing 2-pyrrolidones 失效
    制备2-吡咯烷酮的方法

    公开(公告)号:US4123438A

    公开(公告)日:1978-10-31

    申请号:US829781

    申请日:1977-09-01

    IPC分类号: C07D207/26 C07D207/267

    CPC分类号: C07D207/267

    摘要: 2-PYRROLIDONE OR A SUBSTITUTED 2-PYRROLIDONE IS PREPARED IN HIGH YIELDS BY HYDROGENATING SUCCINONITRILE, OR AN ALKYL-SUBSTITUTED SUCCINONITRILE, AT 50.degree.-200.degree. C. in the liquid phase, in the presence of ammonia and with a partial hydrogen pressure of about 1-50 atmospheres, then the reaction mixture is contacted with water at 100.degree.-300.degree. C. and the desired product recovered.

    摘要翻译: 2-吡咯烷酮或取代的2-吡咯烷酮是通过在氨水存在下在液相中,在氢气和氢气压力下,在氢气中加氢化烷基化物或烷基取代的苯甲酸酯在50℃-200℃下制备的。 约1-50个大气压,然后使反应混合物在100-300℃与水接触,并回收所需产物。

    Preparation of a 2-amino-pyrroline derivative
    5.
    发明授权
    Preparation of a 2-amino-pyrroline derivative 失效
    2-氨基 - 吡咯啉衍生物的制备

    公开(公告)号:US4016175A

    公开(公告)日:1977-04-05

    申请号:US616012

    申请日:1975-09-23

    IPC分类号: C07D207/22 C07D207/263

    CPC分类号: C07D207/22

    摘要: The novel compound 2-(N-.gamma.-cyanopropyl)-amino-.DELTA..sup.1 -pyrroline is prepared by heating .gamma.-amino-butyronitrile in an inert atmosphere to a temperature up to 250.degree. C. and optionally in the presence of a solvent. The product may be hydrolyzed into pyrrolidone-2 and then polymerized to nylon-4.

    摘要翻译: 通过将γ-氨基 - 丁腈在惰性气氛中加热至250℃的温度,任选在溶剂存在下制备新化合物2-(N-γ-氰基丙基) - 氨基-TATA-吡咯啉。 产物可以水解成吡咯烷酮-2然后聚合成尼龙-4。