The combination of (pentamethylcyclopentadienyl)rhodium dichloride dimer [RhCl2Cp*}2] and pseudodipeptide ligands, formed from N-Boc protected amino acids and amino alcohols, resulted in efficient and selective catalysts for the asymmetric transfer hydrogenation of ketones in 2-propanol. A number of different secondary alcohols was obtained in high yields and in excellent enantioselectivity using
(五
甲基环戊二烯基)二
氯化
铑二聚体[RhCl 2 Cp *} 2 ]和由N- Boc保护的
氨基酸和
氨基醇形成的
假二肽配体的组合,导致了高效且选择性的催化剂,用于2-酮的不对称转移加氢
丙醇。使用这些原位形成的催化剂,以高收率和优异的对映选择性获得了许多不同的仲醇。
氘标记实验表明,
氢化物转移反应是通过单氢途径发生的。