1H NMR Determination of Absolute Configuration of 1- or 2-Aryl-Substituted Alcohols and Amines by Means of Their Diastereomers: Novel Separation Technique of Diastereomeric Derivatives of Pyridyl Alcohols by Extraction
作者:Masato Matsugi、Kinuyo Itoh、Masatomo Nojima、Yuri Hagimoto、Yasuyuki Kita
A convenient method to determine the absolute configuration of trans-2-aryl cyclohexanols, 1-aryl alcohols and amines was achieved. This method takes advantage of the 1H NMR spectroscopic observations of the remarkable high-field shift of C18-CH3 protons caused by the aromatic shielding effect. It is based on a discrimination of the difference of the environments in two diastereomers derived from 3