Practical Synthesis of Optically Active Amino Alcohols via Asymmetric Transfer Hydrogenation of Functionalized Aromatic Ketones
作者:Masahito Watanabe、Kunihiko Murata、Takao Ikariya
DOI:10.1021/jo011076w
日期:2002.3.1
2-Substituted acetophenones such as 2-cyano-, 2-azido-, or 2-nitroacetophenones were effectively reduced with a mixture of HCOOH/N(C(2)H(5))(3) containing a chiral Ru(II) catalyst, RuCl[(S,S)-N-(p-toluenesulfonyl)-1,2-diphenylethylenediamine](p-cymene), giving the corresponding optically active alcohols, which can be converted to optically active amino alcohols with excellent ee's. Similarly, the reaction
含有手性Ru(II)的HCOOH / N(C(2)H(5))(3)的混合物可有效还原2-取代的苯乙酮,例如2-氰基,2-叠氮基或2-硝基苯乙酮催化剂RuCl [(S,S)-N-(对甲苯磺酰基)-1,2-二苯基乙二胺](对伞花烯),得到相应的旋光醇,可以将其转化为具有优异ee值的旋光氨基醇。类似地,2-苯甲酰基苯乙酮与相同的Ru催化剂的反应给出定量产率的具有99%ee的相应的光学活性1,3-二醇。