(S)-5-Phenylmorpholin-2-one† and a range of aliphatic aldehydes form chiral iminium intermediates which undergo diastereoselective Mannich reactions with 2-furylboronic acid. Single crystal X-ray analysis of methylated derivative 4 derived from major adduct 2g confirms the stereochemical course of the reaction.
(S)-5-苯基
吗啉-2-酮†和一系列脂肪醛形成手性亚
氨基中间体,与 2-
呋喃硼酸发生非对映选择性曼尼希反应。由主要加合物 2g 生成的甲基化衍
生物 4 的单晶 X 射线分析证实了反应的立体
化学过程。