HIGHLY PRODUCTIVE PROCESS FOR THE PREPARATION OF ALPHA-ACETOXY ALPHA-METHYL-N,N'-DIACETYL MALONAMIDE

HIGHLY PRODUCTIVE PROCESS FOR THE PREPARATION OF ALPHA-ACETOXY ALPHA-METHYL-N,N'-DIACETYL MALONAMIDE

1. Process for the preparation of alpha-acetoxy-alpha-methyl-N,N'-diacetylmalonamide in which, in a first stage, a compound chosen from among hydrocyanic acid and cyanides is reacted with acetic anhydride and, in a second stage, the mixture thus obtained is treated with acetic acid in the prese...

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Bibliographische Detailangaben
Hauptverfasser: LAVIRON, CHARLES, DUBREUX, BERNARD
Format: Patent
Sprache:eng ; fre
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Beschreibung
Zusammenfassung:1. Process for the preparation of alpha-acetoxy-alpha-methyl-N,N'-diacetylmalonamide in which, in a first stage, a compound chosen from among hydrocyanic acid and cyanides is reacted with acetic anhydride and, in a second stage, the mixture thus obtained is treated with acetic acid in the presence of an acid catalyst, characterised in that the first stage is carried out in the presence of a catalyst based on anion resins, the functional groups of which are chosen from among quaternary ammonium groups and tertiary amine groups.