Preparation of .alpha.,.beta.-unsaturated nitriles
    82.
    发明授权
    Preparation of .alpha.,.beta.-unsaturated nitriles 失效
    制备α,β-不饱和腈

    公开(公告)号:US4315869A

    公开(公告)日:1982-02-16

    申请号:US143446

    申请日:1980-04-24

    IPC分类号: C07C255/34 C07C120/10

    CPC分类号: C07C255/00

    摘要: .alpha.,.beta.-Unsaturated nitriles are prepared by reacting an aldehyde with formamide in the presence of an acid and the presence or absence of a non-aromatic solvent to give an N-alkenyl-formamide, which is then passed, in the gas phase, over a dehydration catalyst at an elevated temperature.The nitriles obtainable by the process of the invention are valuable starting materials for the preparation of dyes, crop protection agents, plasticizers and drugs.

    摘要翻译: α,β-不饱和腈通过使醛与甲酰胺在酸的存在下和存在或不存在非芳族溶剂下反应制备,得到N-烯基 - 甲酰胺,然后在气相中通过, 在高温下脱水催化剂。 通过本发明的方法可获得的腈是用于制备染料,作物保护剂,增塑剂和药物的有价值的起始材料。