Copper‐Catalyzed Enantioselective Reductive Aldol Reaction of α,β‐Unsaturated Carboxylic Acids to Alkyl Aryl Ketones: Silanes as Activator and Transient Protecting Group
作者:Hirotsugu Suzuki、Kenji Yoneoka、Sora Kondo、Takanori Matsuda
DOI:10.1002/chem.202104273
日期:2022.2.16
The first reductive aldol reaction of α,β-unsaturated carboxylic acids was developed in the presence of copper/bisphosphine catalysts. The reaction demonstrated the usability of in situ protection of α,β-unsaturated carboxylic acids by a hydrosilane for the reductive C−C bond formation. The Si−O bond in the aldol products is readily cleaved by a standard workup, showing the silane worked as not only
α,β-不饱和羧酸的第一个还原醛醇反应是在铜/双膦催化剂存在下开发的。该反应证明了通过氢化硅烷原位保护α,β-不饱和羧酸以形成还原性C-C键的可用性。醛醇产物中的 Si-O 键很容易通过标准后处理裂解,这表明硅烷不仅可以用作活化剂,还可以用作临时保护基团。