The highly chemo- and enantioselective organocatalytic tandem reaction between N-protected hydroxyl amines and α,β-unsaturated aldehydes is presented; the reaction provides access to 5-hydroxyisoxazolidines and β-amino acids in high yields and with 90â99% ee.
介绍了高度
化学选择性和对映选择性的有机催化串联反应,该反应涉及N-保护的
羟胺与α,β-不饱和醛的反应;该反应能够以高产率和高对映选择性(90-99% ee)合成5-羟基
异恶唑烷和β-
氨基酸。