Preparation of carbonyl halides of more than 7 carbon atoms

Preparation of carbonyl halides of more than 7 carbon atoms

Carbonyl halides of the general formula I (I) where R is an organic radical of more than 7 carbon atoms and X is chlorine or bromine, are prepared by reacting carboxylic acids of the general formula II (II) where R has the abovementioned meaning, with phosphorus chlorides or bromides by treating the...

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Bibliographische Detailangaben
Hauptverfasser: WITTMER, PETER, FREUDENBERG, ENRIQUE, HOHMANN, ANDREAS, BECHTOLSHEIMER, HANS-HEINRICH
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:Carbonyl halides of the general formula I (I) where R is an organic radical of more than 7 carbon atoms and X is chlorine or bromine, are prepared by reacting carboxylic acids of the general formula II (II) where R has the abovementioned meaning, with phosphorus chlorides or bromides by treating these reaction mixtures with carboxamide/hydrochloride or hydrobromide mixtures which are not homogeneously miscible with the carbonyl halides I and then separating off the carboxamide hydrochloride or hydrobromide phase.