Abstract
The stereochemical course of the synthesis of amphetamine from norephedrine and norpseudoephedrine is investigated using liquid chromatography. The results show that the chiral carbon common to both compounds remains unaffected during the reaction sequence. The presence of individual amphetamine enantiomers in the reaction products is determined by reversed-phase liquid chromatographic separation on an achiral stationary phase (C18) following precolumn derivatization with 2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosyl isothiocyanate (GITC). The GITC derivatization procedure allows for the liquid chromatographic separation of the individual enantiomers of amphetamine, norephedrine, norpseudoephedrine, and the intermediate 1-chloro-1-phenyl-2-aminopropanes.
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