Ayad, SulimanPosey, VictoriaDas, AnjanMontgomery, Jason M.Hanson, Kenneth2022-11-292022-11-292019Ayad, S., Posey, V., Das, A., Montgomery, J. M., Hanson, K. (2019). Enantioenrichment of racemic BINOL by way of excited state proton transfer. Chemical Communications 55(9).1359-7345, 1364-548X (DOI https://doi.org/10.1039/C8CC07949Hhttps://hdl.handle.net/11416/959Here we report a method for enantioenriching BINOL using a chiral auxiliary and an excited state proton transfer (ESPT) event. Regardless of the starting enantiomeric excess (ee), after irradiation the solution reaches a photostationary state whose ee is dependent solely on the identity of the chiral auxiliary group. The enantio-enriched BINOL is easily recovered by cleaving the auxiliary group in mild conditions.en-USResearch Subject Categories::NATURAL SCIENCES::ChemistryArticle