Process for the preparation of 5-fluorotoluene-2,4-disulphochloride
    3.
    发明授权
    Process for the preparation of 5-fluorotoluene-2,4-disulphochloride 失效
    5-氟甲苯-2,4-二氯化氯的制备方法

    公开(公告)号:US4740333A

    公开(公告)日:1988-04-26

    申请号:US852586

    申请日:1986-04-16

    CPC分类号: C07C309/00

    摘要: 5-Fluorotoluene-2,4-disulphochloride is prepared by chlorosulphonation of 3-fluorotoluene by first reacting the 3-fluorotoluene with chlorosulfuric acid and then with an inorganic acid chloride at temperatures up to 130.degree. C. until the evolution of gas is complete, and then heating the reaction mixture at temperatures of up to 200.degree. C. and, after the completion of the gas evolution, reacting the product at a lower temperature with further inorganic acid chloride, or reacting the 3-fluorotoluene with powerful sulphonating agents at an elevated temperature, if appropriate in the presence of inert solvents and/or diluents, to give the corresponding disulphonic acid and then treating the disulphonic acid with inorganic acid chlorides.

    摘要翻译: 通过首先使3-氟甲苯与氯磺酸反应,然后在高达130℃的温度下与无机酰氯反应直到气体逸出完成,通过3-氟甲苯的氯磺化制备5-氟甲苯-2,4-二氯化亚铜, 然后在高达200℃的温度下加热反应混合物,在气体逸出完成后,使产物在较低温度下与另外的无机酰氯反应,或使3-氟甲苯与强力磺化剂反应, 如果合适的话,在惰性溶剂和/或稀释剂的存在下升温,得到相应的二磺酸,然后用无机酰氯处理二磺酸。

    Method for producing amines
    7.
    发明申请
    Method for producing amines 失效
    胺的制备方法

    公开(公告)号:US20050113582A1

    公开(公告)日:2005-05-26

    申请号:US10499876

    申请日:2002-12-17

    CPC分类号: C07C209/56 C07C211/52

    摘要: The invention relates to a special two-step method for producing amines on the basis of amides by reacting them with halides or hypohalites in an aqueous solution in a Hofmann degradation reaction. The amide is reacted in an alkaline solution and/or suspension with halides or hypohalites and the reaction mixture obtained in step 1 is added to an aqueous alkaline solution having a temperature of at least 40° C.

    摘要翻译: 本发明涉及一种在霍夫曼降解反应中通过使其与卤化物或次卤酸盐在水溶液中反应而基于酰胺生产胺的特殊两步法。 将酰胺在碱性溶液和/或悬浮液中与卤化物或次卤酸盐反应,将步骤1中获得的反应混合物加入温度至少为40℃的碱性水溶液中

    Process for the preparation of cyclopropanecarboxamide
    8.
    发明授权
    Process for the preparation of cyclopropanecarboxamide 失效
    制备环磷酰胺酰胺的方法

    公开(公告)号:US5068428A

    公开(公告)日:1991-11-26

    申请号:US588251

    申请日:1990-09-26

    CPC分类号: C07C231/02 C07C2101/02

    摘要: Cyclopropanecarboxamide can be prepared by reaction of a cyclopropanecarboxylic ester with NH.sub.3, in which the ester alcohol has 4-8 C atoms and can be straight-chain or branched and which process is carried out in the presence of catalytic amounts of an alkali metal alcoholate of a monohydric C.sub.1-C.sub.8 alcohol at 60.degree.-200.degree. C. in the absence of a hydrocarbon solvent.

    摘要翻译: 环丙烷甲酰胺可以通过环丙烷羧酸酯与NH 3反应来制备,其中酯醇具有4-8个C原子,并且可以是直链或支链的,该方法是在催化量的碱金属醇化物存在下进行的 在不存在烃溶剂的情况下,在60℃-200℃下加入一元醇C 1 -C 8醇。