Axially dissymmetric binaphthyldiimine chiral salen-type ligands for copper-catalyzed asymmetric aziridination
作者:Min Shi、Chuan-Jiang Wang、Albert S.C. Chan
DOI:10.1016/s0957-4166(01)00534-1
日期:2001.12
chiral salen-type ligands 1–4 and 7 were prepared from the reaction of (R)-(+)-1,1′-binaphthyl-2,2′-diamine with 2,6-dichlorobenzaldehyde, 2,3-dichlorobenzaldehyde, 3,4-dichlorobenzaldehyde or salicylaldehyde in high yields, respectively. The catalytic asymmetric aziridination of alkenes has been examined using these novel chiral ligands. Excellent enantioselectivity in the aziridination of cinnamates
轴向不对称的手性Salen型配体1 - 4和7从(的反应制备- [R )- (+) - 1,1'-联萘-2,2'-二胺与2,6-二氯苯甲醛,2,3-分别以高收率得到二氯苯甲醛,3,4-二氯苯甲醛或水杨醛。使用这些新型手性配体已经研究了烯烃的催化不对称叠氮化。使用C 2对称手性配体1可以实现肉桂酸酯叠氮的出色对映选择性。