Synthesis and characterization of group 4 metal amides with new C2-symmetric binaphthyldiamine-based ligands and their use as catalysts for asymmetric hydroamination/cyclization
作者:Guofu Zi、Furen Zhang、Li Xiang、Yue Chen、Weihai Fang、Haibin Song
DOI:10.1039/b923457h
日期:——
mesitoylamides 3H2 and 5H2, or Schiff base ligand 4H2 at room temperature gives, after recrystallization from a benzene, toluene or n-hexane solution, the chiral titanium amides (1)Ti(NMe2)2·3C6H6 (7·3C6H6), (4)Ti(NMe2)2 (11), (5)Ti(NMe2)2 (13) and (6)Ti(NMe2)2 (15), and zirconium amides (1)Zr(NMe2)2 (8), (2)Zr(NMe2)2 (9), (3)Zr(NMe2)2 (10), (4)Zr(NMe2)2 (12), (5)Zr(NMe2)2 (14) and (6)Zr(NMe2)2·C7H8 (16·C7H8)
新系列 钛(IV)锆(IV)和锆(IV)酰胺的反应是由M(NMe 2)4 (M = 钛, 锆)和手性配体, (R)-2,2'-双(对甲苯磺酰基氨基)-1,1'-联萘基(1 H 2),(R)-2,2'-双(二苯基膦酰基氨基)-1,1'-联萘基(2 H 2),(R)-2,2'-双(甲磺酰基氨基)-1,1'-联萘基(3 H 2),(R)-5,5',6,6',7,7',8,8'-八氢-2,2'-双(吡咯-2-基亚甲基氨基)-1,1'-联萘基(4 H 2),(R)-5,5',6,6',7,7',8,8'-八氢-2,2'-双(甲磺酰氨基)-1,1'-联萘基(5 H 2),和(R)-5,5',6,6',7,7',8,8'-八氢-2,2'-双(均三甲磺酰基氨基)-1,1'-联萘基(6 H 2),它们来自(R)-2,2'-二氨基-1,1'-联萘基。的反应M(NMe 2)4含有1当量的芳基磺酰胺1 H 2和6