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

US8338644B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Horst Grafmans · Bad Dürkheim, DE
• Steffen Maas · Bubenheim, DE
• Alexander Weck · Freinsheim, DE
• Heinz Ruetter · Kapellen, BE
• Michael Schulz · Ludwigshafen, DE
• Karl-Heinz Ross · Grünstadt, DE

Key dates

• Filing date: Dec 14, 2010
• Grant date: Dec 25, 2012
• Expiry date: Dec 14, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C231/02
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

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 which is obtained as a by-product in the preparation of polyTHF by transesterifying polyTHF diacetate with methanol.