A wide range of aliphatic and aromatic α-keto esters has been transformed to α-hydroxy-β-nitro esters via the Cu(II)-bisoxazolidine-catalyzed Henry reaction. In the presence of 10 mol% of the chiral catalyst, nitroaldol products were obtained in up to 95% yield and 76% ee.
大量的脂肪族和芳香族 α-
酮酯已通过 Cu(II)-双
恶唑烷催化的亨利反应转化为 α-羟基-β-硝基酯。在 10 mol% 的手性催化剂存在下,硝基醛醇产物的产率高达 95%,ee 高达 76%。