Process for the preparation of N-alkyl-N'-methylimidazolinium sa

Details Process for the preparation of N-alkyl-N'-methylimidazolinium sa Process for the preparation of N-alkyl-N'-methylimidazolinium sa

1997-07-03

1999-01-05

Higel, Floyd D.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

5403351, C07D23304, C07D23356, C07D23306, C07D23308

Patent

active

058565132

ABSTRACT:
An N-alkyl-N'-methylimidazolinium salt of an organic acid is prepared in high purity and in high yield by (a) preparing an N-alkyl-N'-methylimidazolinium methyl carbonate in a quaternization reaction by methylating an N-alkylimidazoline with dimethyl carbonate and (b) reacting the resulting N-alkyl-N'-methylimidazolinium methyl carbonate with an organic acid, in an anion exchange reaction, wherein the reaction of each step is conducted in methanol solvent.

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