Asymmetric aminohydroxylation of substituted styrenes using t-butyl carbamate
摘要:
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. (C) 1998 Elsevier Science Ltd. All rights reserved.