S)-(+)-pseudoephedrine as a valuable chiral electrophile for the preparation of alpha-amino carbonyl compounds. In this context, the addition of Grignard reagents to the azomethine moiety of this chiral electrophile afforded the expected alpha-amino amide adducts in good yields and diastereoselectivities. Moreover, these adducts have been transformed into enantioenriched alpha-amino ketones by exploiting
                                    我们已经研究了衍生自(S,S)-(+)-伪
麻黄碱的α-亚
氨基
乙醛酰胺作为制备α-
氨基羰基化合物的有价值的手性亲电试剂的能力。在这种情况下,将
格氏试剂添加到该手性亲电试剂的偶氮甲碱部分中,以良好的收率和非对映选择性提供了预期的α-
氨基酰胺加合物。而且,这些加合物已通过利用伪
麻黄碱酰胺与
有机锂试剂选择性地与
氨基甲酰基单加成的能力而转化为对映体富集的α-
氨基酮。