The phosphine-free ruthenium complex containing chi-ral N-(p-toluenesulfonyl)-1,2-diphenylethylenediamine (TsDPEN) showed excellent stereoselectivity in the tandem asymmetric reduction of 2-(aroylmethyl)quinolines. The reaction involves transfer hydrogenation of aromatic ketones and hydrogenation of quinolines, giving 1,2,3,4-tetrahydroquinoline derivatives with up to 99% ee and 95:5 dr.
不含
磷的
钌配合物,含有手性N-(对
甲苯磺酰基)-1,2-二苯基
乙二胺(TsDPEN),在2-(芳酰甲基)
喹啉的串联不对称还原反应中显示出极佳的立体选择性。该反应涉及
芳香酮的转移氢化和
喹啉的氢化,生成了具有高达99% ee和95:5 dr的
1,2,3,4-四氢喹啉衍
生物。