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Updated: Aug 23, 2026

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
Published on: May 29, 2018
Optical resolution and racemization mechanism of a tellurinic acid
Yusuke Nakashima1, Toshio Shimizu, Kazunori Hirabayashi
1Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University Minami-ohsawa, Hachioji, Tokyo 192-0397, Japan.
Abstract:
[reaction: see text] Optically active tellurinic acid was obtained for the first time by chromatographic resolution of racemic 2,4,6-triisopropylbenzenetellurinic acid (1) using a chiral column. Optically active tellurinic acid (+)-1 was stable toward racemization in hexane, although racemization occurred in hexane/2-propanol. The kinetic studies for the racemization, oxygen exchange reaction using H(2)(18)O, and theoretical studies clarified that the racemization of the optically active tellurinic acid in solution proceeds via a hypervalent tellurane formed by addition of water remaining in solvent.
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