Tris(acetylacetonato)Co(III) and Cr(III) were completely resolved by HPLC on a (+)-poly(triphenylmethyl methacrylate) column. Optical data of pure enantiomers were obtained and the structure of the polymer was discussed on the basis of the results of the resolution.
The title chiral troponoid compounds were resolved in optically pure forms by high-performance liquid chromatography on a chiral poly(triphenylmethyl methacrylate) column. The compounds showed large optical rotations. The absolute configuration of (−)-3,12-dichloro derivative was found to be R by X-ray analysis. Resolved enantiomers were racemized upon UV irradiation in solution.
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