Chiral non racemic carbazate 1, derived from (R)-(−)-phenylglycinol, reacts regioselectively with benzaldehyde or its dimethylacetal to give an azomethine imine. The facial, and regio selectivities of 1,3-dipolar cycloadditions of this reactive species with various dipolarophiles have been studied and are described in this paper. In the best cases, up to three contiguous asymmetric centers could be
                                    衍生自(R)-(-)-苯基甘
氨醇的手性非外消旋
氨基甲酸酯1与
苯甲醛或其二甲基
缩醛区域选择性反应,生成偶氮甲
亚胺。已经研究并描述了该反应性物种与各种偶极亲和性的1,3-偶极环加成反应的面部和区域选择性。在最佳情况下,最多可以同时以完整的对映和非对映选择性方式生成三个连续的不对称中心。