Process for preparation of pharmaceutically desired chiral tetralone from tetralones

摘要

Improved processes for preparation of tetralones in high enantiomeric purity centers on resolution using simulated moving bed chromatography of a racemic tetralone derivative. Resolution is effected with high enantiomeric purity, and subsequent reactions of the desired tetralone derivative enantiomer performed with high optical specificity to maintain enantiomeric purity. The undesired enantiomer may be racemized and recycled to the resolution phase to avoid loss.