Process for isolating N,N-dimethylaminoacetonitrile from water mixtures

US4176133A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Manfred Lenthe · Odenthal, DE
• Gerhard Dankert · Cologne, DE

Key dates

• Filing date: Oct 19, 1978
• Grant date: Nov 27, 1979
• Expiry date: Oct 19, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C255/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

In the recovery of N,N-dimethylaminoacetonitrile from a mixture thereof with water by extraction with an organic solvent thereby to form an aqueous phase and an organic solvent phase containing the nitrile, separating the organic phase, and recovering the nitrile from the organic solvent, the improvement which comprises employing 1,2-dichlorobenzene as the organic solvent. Recovery of the nitrile from the organic solvent can be accomplished by distilling of the nitrile, the undistilled solvent being recycled for further use.