Table of Contents
Laser Chemistry
Volume 18, Issue 3, Pages 143-154
http://dx.doi.org/10.1155/1999/90875

Enantioenrichments of α -Amino Acids With High-Intensity Excimer Laser

1Osaka Laboratory for Radiation Chemistry, Japan Atomic Energy Research Institute, Mii-minami 25-1, Neyagawa, Osaka 572-0019, Japan
2Kansai Research Establishment, Japan Atomic Energy Research Institute, Mii-minami 25-1, Neyagawa, Osaka 572-0019, Japan

Received 22 February 1996

Copyright © 1999 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

It has been found that the irradiation with highly intense circularly polarized light (CPL) from an XeF (351 nm) laser can induce the enantiodifferentiation of racemic methionine with reasonable enantiocontrol by switching the sense of the CPL. Also, a similar result was obtained for threonine and it was newly revealed that the enantioenrichment is largely affected by the chemical structure, especially the functional groups, of α-amino acids, to cause photodecomposition such as decarboxylation and deamination. Furthermore, it was shown for the first time that the irradiation of a proline (Pro)-valine (Val) mixture with the CPL induces their enantioselective decomposition simultaneously, suggesting the occurrence of intermolecular interaction between Pro and Val.