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Reaction scope with respect to styrenes.[a]
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Isolated yields are the averaged results of two reproducible experiments. Diastereomer ratios were determined by 1H NMR analysis of the unpurified reaction mixtures. Enantiomeric excesses for the major diastereomer were determined by chiral SFC or HPLC. See Supporting Information for details. (S,S)-t-BuPyBox = 2,6-bis[4′-(S)-(tert-butyl)oxazolin-2′-yl]pyridine.
