TsDPEN has been synthesized readily and used as a water-soluble ligand for [Cp*RhCl2]2 catalyzed asymmetric transfer hydrogenation (ATH) of aromatic ketones in water. This process provided the secondary alcohols in moderate to excellent conversions (up to 100%) with high enantioselectivities (up to 98% ee) under mild reaction conditions without adding any surfactants. The catalytic system is highly effective
咪唑离子束缚的TsDPEN易于合成,并用作[Cp * RhCl 2 ] 2催化的
水中芳族酮的不对称转移氢化(ATH)的
水溶性
配体。该方法在温和的反应条件下,无需添加任何表面活性剂即可提供中等至极好的转化率(最高100%)和高对映选择性(最高98%ee)的仲醇。底物与催化剂(S / C)之比为500,低
氢化物供体负载为1.5当量,该催化体系非常有效。HCO 2 Na的含量。所介绍的过程很简单,使该方法适合实际使用。