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US 4,070,394 AGranted
Carnitine nitrile halide preparation
AssigneeEthyl Corporation
InventorKarl E. Wiegand
Life of this patent
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Abstract
A process for the preparation of carnitine nitrile halides by reacting (2,3-epoxypropyl)trimethylammonium halide with a cyano compound selected from the group consisting of alkali metal cyanide and hydrocyanic acid at a temperature of from about -20.degree. to about 120.degree. C in aqueous liquid medium.
Claims10
A process for the production of carnitine nitrile halide without co-production of substantial amounts of water-soluble salts consisting of, in combination, the steps of
- a. contacting a 2,3-epoxypropyl halide with trimethylamine in an organic solvent to produce a 2,3-epoxypropyl trimethyl ammonium halide,
- (b) removing the organic solvent from said 2,3-epoxypropyl trimethyl ammomium halide,
- (c) mixing an inert liquid aqueous reaction medium with said 2,3-epoxypropyl trimethyl ammonium halide, and
- (d) contacting at a temperature from 0.degree. to about 30.degree. C, said 2,3-epoxypropyl trimethyl ammonium halide with a cyano compound selected from the group consisting of a metal cyanide, ammonium cyanide and hydrocyanic acid whereby carnitine nitrile halide is produced without co-production of substantial amounts of water soluble salts.
1 more element
Dependencies are inferred from the claim text.