Water-Compatible Organocatalysts for Direct Asymmetric <i>syn</i>-Aldol Reactions of Dihydroxyacetone and Aldehydes
作者:S. S. V. Ramasastry、Klaus Albertshofer、Naoto Utsumi、Carlos F. Barbas
DOI:10.1021/ol8002833
日期:2008.4.1
effectively catalyzed the reactions of unprotected or protected dihydroxyacetone with a variety of aldehydes to provide syn-aldol products with good yields and ee values up to >99%. Significantly, this amide catalyst was effective with a variety of nonaromatic aldehyde acceptors that had proven difficult in the presence of other catalysts. Reactions of protected dihydroxyacetone proceeded in aqueous media