Twisted 9, 10-phenanthrenequinones: Chromatographic enrichment of enantiomers and barriers to racemization

Zusammenfassung

The enantiomers (M) and (P) of helical 9, 10-phenanthrenequinones were enriched by liquid chromatography with enantiomeric purities of 0.31 to 0.95. Their barriers to racemization (Table 2) were compared with the ones of the corresponding hydrocarbons.