Method for purifying n,n -dimethylaminopropylamine

Details Method for purifying n,n -dimethylaminopropylamine Method for purifying n,n -dimethylaminopropylamine

C - Chemistry, Metallurgy

07

C

202/92, 260/612.

C07C 87/18 (1985.01)

Patent

CA 1206168

ABSTRACT OF THE DISCLOSURE The present invention relates to a method for purifying N,N-dimethylaminopropylamine containing 1,3-diaminopropane as an impurity. Dimethylaminopropionitrile is formed by adding dimethylamine to acrylonitrile, and is then converted by subsequent hydrogenation and distillation into dimethylaminopropylamine. The impurity 1,3-diaminopropane is removed by adding a metal salt of a transition element which forms a stable complex with the 1,3-diaminopropane.

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