Synthesis of Phosphoramides for the Lewis Base-Catalyzed Allylation and Aldol Addition Reactions
作者:Scott E. Denmark、Xiping Su、Yutaka Nishigaichi、Diane M. Coe、Ken-Tsung Wong、Stephen B. D. Winter、Jun Young Choi
DOI:10.1021/jo9820723
日期:1999.3.1
Both chiral and achiral phosphoramides of diverse structure were prepared from diamines by the coupling to phosphorus(V) or phosphorus(III) reagents. Several enantiopure 1,2-diphenyl-1,2-ethanediamine analogues have been prepared by the reductive coupling of the corresponding N-silylimine with NbCl(4)(THF)(2) and subsequent resolution by the formation of diastereomeric menthyl carbamates. (S,S)-N,
通过与磷(V)或磷(III)试剂偶联,由二胺制备了多种结构的手性和非手性磷酰胺。几种对映体纯的1,2-二苯基-1,2-乙二胺类似物是通过将相应的N-硅酰亚胺与NbCl(4)(THF)(2)还原偶联而制备的,随后通过形成非对映异构的氨基甲酸薄荷酯进行拆分。(S,S)-N,N′-二-(1-萘基)-1,2-二苯基-1,2-乙二胺15是通过(S,S)-1,2-二苯基-1的芳基化制备的,2-乙二胺与碘化萘。