Exposure of chiral amino aldehydes (1) to dimethyl diazophosphonate (4) affords propargylic amines (2) of high optical purity. Chain extension of these intermediates is readily accomplished via hydrozirconation of the acetylene moiety and subsequent Ni(II) catalyzed Michael addition to a variety of Michael acceptors.
将手性
氨基醛(1)暴露于重氮
膦酸二甲酯(4)可获得高光学纯度的
炔丙基胺(2)。这些中间体的扩链很容易通过
乙炔部分的加氢
锆化和随后的Ni(II)催化的Michael加成到各种Michael受体上而实现。