Enantioselective Sharpless Dihydroxylation of Vinylic Aromatic Heterocycles
作者:Christophe M. G. Philippo、Patrick Mougenot、Alain Braun、Gérard Defosse、Stéphanie Auboussier、Philippe R. Bovy
DOI:10.1055/s-2000-6237
日期:——
Asymmetric dihydroxylation (AD) with an AD-mix reagent was conducted on a series of terminal olefins possessing an extended heteroaromatic group. Good yields and high enantioselectivities were observed in most instances. However, the steric hindrance resulting from neighboring substituents on the aromatic heterocycle can interfere during the course of the dihydroxylation. The effects of voluminous groups such as t-Boc, t-BDMS or adamantylmethyl were evaluated.