The (+)-enantiomers of the o-Br, m-F and p-CH3 derivatives of trans phenyl glycidic acid have been obtained from the corresponding trans cinnamic acid derivatives using Oxone and the tri-keto bile acid dehydrocholic acid. Vibrational circular dichroism (VCD) spectroscopy of their methyl esters has been used to determine their absolute configurations. In each case, the absolute configurations of both methyl ester and parent acid were shown to be (2S,3R)-(+)/(2R,3S)-().
Determination of Absolute ConfigurationUsing Vibrational Circular Dichroism Spectroscopy: Phenylglycidic Acid Derivatives Obtained Via Asymmetric Epoxidation Using a Keto Bile Acid.
BORTOLINI, Olga
2005
Abstract
The (+)-enantiomers of the o-Br, m-F and p-CH3 derivatives of trans phenyl glycidic acid have been obtained from the corresponding trans cinnamic acid derivatives using Oxone and the tri-keto bile acid dehydrocholic acid. Vibrational circular dichroism (VCD) spectroscopy of their methyl esters has been used to determine their absolute configurations. In each case, the absolute configurations of both methyl ester and parent acid were shown to be (2S,3R)-(+)/(2R,3S)-().File in questo prodotto:
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