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    • 48. 发明授权
    • Preparation of carboxylic chlorides
    • 羧酸氯化物的制备
    • US5430186A
    • 1995-07-04
    • US274696
    • 1994-07-14
    • Peter KsollWolfgang ReutherRoland Ettl
    • Peter KsollWolfgang ReutherRoland Ettl
    • B01J14/00C07C51/60C07C53/38C07C57/64C07C51/58C07C51/02
    • C07C51/60B01J14/00
    • A process for the continuous manufacture of carboxylic chlorides (I) of the general formula R-COCl, in which R stands for a C-organic radical containing from 1 to 30 C atoms, by the reaction of a carboxylic acid (II) with a reaction product (III) of phosgene (IV) and an N,N-substituted formamide (V), in which compounds II and III are passed in parallel flow upwardly into a zone, filled with compound III, in a reactor (1), the reaction mixture is allowed to rise in predominantly laminar flow, such that phase separation occurs to give a top I-phase and a bottom phase III' mainly comprising compound III and formamide formed and compound I is removed from the top phase and also portions of the bottom phase III' are removed at the rate at which they are formed.
    • 连续制造通式为R-COCl的羧酸(I)的方法,其中R代表含有1至30个C原子的C-有机基团,通过羧酸(II)与 将光气(IV)的反应产物(III)和N,N-取代的甲酰胺(V),其中化合物II和III在反应器(1)中向上平行流入填充有化合物III的区域, 允许反应混合物主要以层流升高,使得发生相分离以产生主要包含化合物III和形成的甲酰胺的顶部I相和底部相III',化合物I从顶部相中除去, 以形成它们的速率除去底部相III'。