Reductive Amination/Cyclization of Keto Acids Using a Hydrosilane for Selective Production of Lactams versus Cyclic Amines by Switching of the Indium Catalyst
作者:Yohei Ogiwara、Takuya Uchiyama、Norio Sakai
DOI:10.1002/anie.201509465
日期:2016.1.26
amines by reductive amination, using an indium/silane combination. This relatively benign and safe catalyst/reductant system tolerates the use of a variety of functional groups, especially ones that are reduction‐sensitive. A direct switch from synthesizing lactams to synthesizing cyclic amines is achieved by changing the catalyst from In(OAc)3 to InI3. This conversion occurs by further reduction of the
本文描述的是使用铟/硅烷组合通过还原胺化从酮酸与伯胺催化构筑N-取代的五元和六元内酰胺。这种相对温和,安全的催化剂/还原剂体系可以耐受各种官能团的使用,尤其是对还原敏感的官能团。通过将催化剂从In(OAc)3变为InI 3,可以实现从合成内酰胺到合成环胺的直接转换。该转化通过使用铟/硅烷对进一步还原内酰胺而发生。