By reaction of aromatic aldehydes with (-)-ephedrine aromatic 1,3-oxazolidines can be obtained. The reaction was carried out either at conventional conditions or by microwave heating. The different diastereomeric ratios were determined by Means of H-1 NMR spectroscopy.
Stability Studies of Oxazolidine-Based Compounds Using 1H NMR Spectroscopy
作者:Gerard P. Moloney、Magdy N. Iskander、David J. Craik
DOI:10.1002/jps.22108
日期:2010.8
A series of oxazolidine-basedcompounds with a variety of substituents in positions 2 and 3 was synthesized and their stability studied. Ring opened intermediates formed on addition of limiting amounts of D(2)O to oxazolidine solutions, as observed by NMR. As the hydrolysis reactions proceeded, a series of novel dimeric beta-amino alcohol compounds formed via an internal reaction between ephedrine