Method for producing acid chlorides

   
   

The invention relates to a method for producing acid chlorides by converting carboxylic acids with carbon oxychlorides or thionyl chloride in the presence of a catalyst adduct of an N,N-disubstituted formamide of general formula (I) and carbon oxychloride or thionyl chloride. In the formula, R.sup.1 and R.sup.2, independently from one another, mean C.sub.1 - to C.sub.4 -alkyl or R.sup.1 and R.sup.2 together mean a C.sub.4 - or C.sub.5 -alkylene chain. According to the inventive method, hydrogen chloride is added during and/or after the conversion.

L'invenzione riguarda un metodo per produrre i cloruri acidi convertendo gli acidi carbossilici con gli ossicloruri del carbonio o il cloruro di thionyl in presenza di un complesso del catalizzatore di una N, di una formammide N-n-disubstituted della formula generale (i) e dell'ossicloruro del carbonio o del cloruro di thionyl. Nella formula, nel R.sup.1 e nel R.sup.2, indipendentemente l'un l'altro, C.sub.1 medio - a C.sub.4 - l'alchile o R.sup.1 e R.sup.2 significano insieme un C.sub.4 - o C.sub.5 - catena dell'alchilene. Secondo il metodo inventivo, l'acido cloridrico รจ aggiunto durante e/o dopo la conversione.

 
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