Method for the production of n,n-dimethylacetamide (DMAC)

A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution and the continuous distillative workup is effected in such a way that methanol...

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Bibliographic Details
Main Author GRAFMANS HORST,MAAS STEFFEN,WECK ALEXANDER,RUETTER HEINZ,SCHULZ MICHAEL,ROSS KARL-HEINZ
Format Patent
LanguageEnglish
Published 14.11.2007
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution and the continuous distillative workup is effected in such a way that methanol and any other low boilers are initially removed overhead in a column A and the bottom effluent of column A is fed to a column B in which DMAC is removed via a side draw a purity of 99.7% by weight.
Bibliography:Application Number: CN200580041830