SCHEDULED MAINTENANCE
α-Benzylation of (+)- and (–)-N-phenylacetyl imidazolidinones with 2-O-methoxymethylbenzyl bromide, followed by reductive removal of the chiral auxiliary and cyclization, leads to isoflavans in excellent enantiomeric excess and yield.
M. Versteeg, B. C. B. Bezuidenhoudt, D. Ferreira and K. J. Swart, J. Chem. Soc., Chem. Commun., 1995, 1317 DOI: 10.1039/C39950001317
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