We report a facile one-pot synthesis of chiral β-amino esters via direct reductive amination of β-keto esters with ammonium acetate (NH4OAc) and H2 in the presence of chiral Ru-ClMeOBIPHEP catalysts using 2,2,2-trifluoroethanol (TFE) as a solvent, leading to β-amino esters in high yields with high enantioselectivities (up to 99% ee).
我们报道了一种简便的一锅法合成手性β-
氨基酯的方法,利用β-
酮酯与
醋酸铵(NH4OAc)和
氢气的直接还原胺化反应,采用手性Ru-ClMeOBIPHEP催化剂,溶剂为
2,2,2-三氟乙醇(
TFE),最终得到高产率且高对映体选择性(高达99% ee)的β-
氨基酯。