Process for manufacturing L(-)-carnitine from a waste product ha

Details Process for manufacturing L(-)-carnitine from a waste product ha Process for manufacturing L(-)-carnitine from a waste product ha

1994-04-04

1996-07-02

Shippen, Michael L.

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

Organic compounds

Carboxylic acids and salts thereof

558 48, C07C22900

Patent

active

055324100

ABSTRACT:
L-(-)-carnitine is prepared from D-(+)-carnitinamide by (a) reacting D-(+)-carnitinamide in an acid medium with a straight or branched chain aliphatic alcohol thereby forming D-(+)-carnitine ester, (b) acylating the D-(+)-carnitine ester with an anhydride R.sub.2 O, thereby forming an acylated ester intermediate, (c) acid hydrolyzing the ester group of the acyl carnitine ester thereby obtaining acyl D-(+)-carnitine, (d) lactonizing the acyl D-(+)-carnitine to a lactone of L-(-)-carnitine, and (e) reacting the lactone with base thereby forming L-(-)-carnitine.

REFERENCES:
patent: 3096368 (1963-07-01), Binon
patent: 4413142 (1983-11-01), Fiorini

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