Process for making imidazolines

Details Process for making imidazolines Process for making imidazolines

1978-05-01

1980-02-19

Rotman, Alan L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

252 88, 252357, C07D23316

Patent

active

041895932

ABSTRACT:
A process for making substituted imidazoline substantially completely free from diamide and preferably from byproduct ester. The process involves contacting an aminoethyl lower alkanol amine with a methyl carboxylate at elevated temperature and thereafter subjecting the reaction product to two successive heat treatments under specified conditions. A feature of the process is that it contains an optional step which can be employed to correct the formation of unwanted amounts of ester in the product. The product imidazoline is useful as a starting material for making amphoteric surfactants.

REFERENCES:
patent: 2267965 (1941-12-01), Wilson
patent: 2484146 (1949-10-01), Barker et al.
patent: 3408361 (1968-10-01), Mannheimer
patent: 4121009 (1978-10-01), Chakrabarti
Chem. Abst. 1964, vol. 60, p. 13251e.

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