27270-80-0Relevant articles and documents
An efficient synthesis of aziridines from ephedrines
Cruz, Alejandro,Padilla-Martinez, Itzia Irene,Garcia-Baez, Efren V.
experimental part, p. 909 - 913 (2010/08/19)
The reaction of chlorodeoxyephedrine hydrochlorides with one, two, and three molar equivalents of base was studied. Isochlorodeoxypseudoepherines were identified and assigned by 1H and 13C NMR data as intermediate compounds in the formation of cis-aziridines. Erythro and threo ephedrinethylethers were isolated as new compounds and analyzed by spectroscopic data. In addition, the erythro isomer was studied by X-ray diffraction.
Liquid Chromatographic Determination of the Enantiomeric Composition of Methamphetamine Prepared from Ephedrine and Pseudoephedrine
Noggle, F. Taylor,DeRuiter, Jack,Clark, C. Randall
, p. 1643 - 1648 (2007/10/02)
Determination of the stereochemical makeup of forensic samples can provide information about the source of the sample and a basis for intersample comparisons.The clandestine synthesis of methamphetamine and related amines continues to be a major source of these drugs of abuse.Most synthetic methods employ carbon-nitrogen bond formation and produce a racemic mixture; however, the individual enantiomers of ephedrine and pseudoephedrine contain the structural components of methamphetamine in chiral form.This paper will focus on the stereochemical course of the synthesis of methamphetamine via hydrogenolysis of the benzylic hydroxyl group in ephedrine and pseudoephedrine.The configurations of these amines were determined by liquid chromatography on an achiral C18 stationary phase following precolumn derivatization with 2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl isothiocyanate.
