Efficient Synthesis of Optically Active Atropisomeric Anilides through Catalytic Asymmetric N-Arylation Reaction
作者:Osamu Kitagawa、Masashi Takahashi、Masatoshi Yoshikawa、Takeo Taguchi
DOI:10.1021/ja042216x
日期:2005.3.1
of (R)-DTBM-SEGPHOS-Pd(OAc)2 catalyst, N-arylation of ortho-tert-butyl-NH-anilides with 4-nitroiodobenzene proceeds with high enantioselectivity (89-95% ee) to give optically active atropisomeric anilides possessing N-C chiral axis. Furthermore, the intramolecular version of the present catalytic asymmetric N-arylation gave atropisomeric lactams with high optical purity (94-96% ee).
在 (R)-DTBM-SEGPHOS-Pd(OAc)2 催化剂存在下,邻叔丁基-NH-苯胺与 4-硝基碘苯的 N-芳基化反应以高对映选择性 (89-95% ee) 进行,得到光学具有NC手性轴的活性阻转异构苯胺。此外,本催化不对称 N-芳基化的分子内形式产生具有高光学纯度 (94-96% ee) 的阻转异构内酰胺。