Method for purifying N,N-dimethylaminopropylamine

Details Method for purifying N,N-dimethylaminopropylamine Method for purifying N,N-dimethylaminopropylamine

1982-05-19

1985-07-30

Waltz, Thomas A.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

564497, 564499, C07C 8526

Patent

active

045323542

ABSTRACT:
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 N,N-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.

REFERENCES:
patent: 3038904 (1962-06-01), Godfrey
patent: 3755447 (1973-08-01), Klemann et al.
patent: 3758580 (1973-09-01), Lancer et al.
patent: 4055586 (1977-10-01), Feichtinger et al.
patent: 4172091 (1979-10-01), Weber et al.
Hares et al., JACS, vol. 78 (1956), pp. 1816-1818.

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