Asymmetric Aminohydroxylation of Substituted Styrenes Using t-Butyl Carbamate.

Abstract A variety of substituted styrenes have been aminohydroxylated using t -butyl carbamate to give either enantiomer of highly enantiomerically enriched N -Boc protected amino alcohols in good yields. Better levels of regioselectivity were observed with (DHQ) 2 PHAL than with (DHQD) 2 PHAL even though the enantioselectivities observed were comparable. One of the amino alcohol products was converted into a novel chiral diamine.