A novel enantioselective aminomethylation reaction of diazo compound, alcohol and α-aminomethyl ether enabled by asymmetric counteranion-directed catalysis is disclosed that offers an efficient and convenient access to furnish optically active α-hydroxyl-β-amino acids in high yield with high to excellent enantioselectivities. Control experiments and DFT calculations indicate that the transformation
公开了一种通过不对称抗衡阴离子导向催化实现的重氮化合物、醇和 α-
氨基甲基醚的新型对映选择性
氨基甲基化反应,它提供了一种高效便捷的途径以高产率提供光学活性 α-羟基-β-
氨基酸。对映选择性。对照实验和 DFT 计算表明,转化是通过用
亚甲基亚胺离子捕获原位生成的烯醇中间体而进行的,不对称诱导是由手性五羧基
环戊二烯阴离子通过氢键和静电相互作用实现的。