arenetellurinic acid (+)-1d was obtained by means of liquid chromatography on a chiral column. The absolute configuration of the optically active tellurinicacid was assigned by comparing its circular dichroism spectrum with that of an optically active sulfinic acid, the absolute configuration of which was determined by X-ray crystallographic analysis. The absolute configurations of areneseleninic acids, which
[reaction: see text] Optically active tellurinicacid was obtained for the first time by chromatographic resolution of racemic 2,4,6-triisopropylbenzenetellurinic acid (1) using a chiral column. Optically active tellurinicacid (+)-1 was stable toward racemization in hexane, although racemization occurred in hexane/2-propanol. The kinetic studies for the racemization, oxygen exchange reaction using