Process for making 1-hydroxyethyl-2-undecyl-2-imidazoline

Details Process for making 1-hydroxyethyl-2-undecyl-2-imidazoline Process for making 1-hydroxyethyl-2-undecyl-2-imidazoline

1978-01-10

1979-07-17

Raymond, Richard

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548347, C07D23364

Patent

active

041616049

ABSTRACT:
A method for producing 1-hydroxyethyl-2-undecyl-2-imidazoline is disclosed. Lauric acid is reacted with a molar excess of aminoethylethanolamine (AEEA) under vacuum. A first column containing vapor-liquid contact means is used to rectify the reactor overhead vapor (water of reaction plus AEEA); the overhead (water) is discarded; and the bottoms (primarily AEEA) returned directly to the reactor. After substantially all the water has been removed, the reactor overhead is fed to a second column, which is devoid of vapor-liquid contact means, whereby unreacted AEEA is removed. A high purity product remains in the reactor. Other carboxylic acids, such as, fatty acids, may be used in place of lauric acid, and other diamines, such as, ethylenediamine and diethylenetriamine, may be used in place of AEEA, to produce the analogous imidazolines.

REFERENCES:
patent: 2528378 (1950-10-01), Mannheimer
patent: 2528379 (1950-10-01), Mannheimer
patent: 2892812 (1959-06-01), Helbing
patent: 3408361 (1968-10-01), Mannheimer

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