Clay as a medium for optical resolution: chromatographic resolution of 2,3-dihydro-2-methyl-5,6-diphenylpyrazine on a Λ-[Ru(phen)3]2+(phen = 1,10-phenanthroline) montmorillonite column

Abstract
DL-2,3-Dihydro-2-methyl-5,6-diphenylpyrazine was partially resolved on a 2 × 1.2 cm o.d. column of Λ-[Ru(phen)3]2+(phen = 1,10-phenanthroline) montmorillonite when it was eluted with 1 : 2 (v/v) methanol–water solvent.