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    • 2. 发明授权
    • Preparation of carboxylic chlorides
    • 羧酸氯化物的制备
    • US5200560A
    • 1993-04-06
    • US908439
    • 1992-06-30
    • Thomas M. KahlJochem HenkelmannLeopold HupferWolfgang FranzischkaWolfgang Schwarz
    • Thomas M. KahlJochem HenkelmannLeopold HupferWolfgang FranzischkaWolfgang Schwarz
    • C07C51/60
    • C07C51/60
    • A process for the preparation of a carboxylic chloride of the general formula I ##STR1## in which R denotes C.sub.1 -C.sub.30 -alkyl, C.sub.2 -C.sub.30 -alkenyl or C.sub.2 -C.sub.30 -alkynyl, from a carboxylic acid of the general formula II ##STR2## in which R has the meanings stated, and phosgene COCl.sub.2 (III), in the presence of a catalyst adduct comprising phosgene and N,N-disubstituted formamide of the general formula IV ##STR3## in which R.sup.1 and R.sup.2 are independently C.sub.1 -C.sub.3 -alkyl or R.sup.1 and R.sup.2 together form a C.sub.4 - or C.sub.5 -alkylene chain which may or may not be interrupted by an oxygen atom or by a nitrogen atom carrying a C.sub.1 -C.sub.3 -alkyl group or CHO, the product being isolated by phase separation, wherein the amount of phosgene added to the formamide (IV) is from 20 to 70% molar, based on the formamide.
    • 由通式I(I)表示的羧酸的制备方法,其中R表示C 1 -C 30 - 烷基,C 2 -C 30 - 烯基或C 2 -C 30炔基,由通式 (II)其中R具有所述的含义,和光气COCl 2(III),在包含光气和N,N-二取代的通式IV(IV)的甲酰胺的催化剂加合物的存在下,在 其中R 1和R 2独立地是C 1 -C 3 - 烷基或R 1和R 2一起形成C4-或C5-亚烷基链,其可以被氧原子或可以不被氧原子中断或可以被携带C1-C3-烷基的氮原子或 CHO,通过相分离分离产物,其中加甲酰胺(IV)中的光气的量为甲酰胺为20-70%摩尔。