Chelation-Assisted Rhodium-Catalyzed Direct Amidation with Amidobenziodoxolones: C(sp<sup>2</sup>)–H, C(sp<sup>3</sup>)–H, and Late-Stage Functionalizations
作者:Xu-Hong Hu、Xiao-Fei Yang、Teck-Peng Loh
DOI:10.1021/acscatal.6b02015
日期:2016.9.2
Air-stable and convenient amidobenziodoxolones as an amidating reagent were disclosed to enable direct amidation on a wide range of C(sp2)–H bonds of (hetero)arenes and alkenes, as well as unactivated C(sp3)–H bonds under RhIII catalysis. The approach to access 49 examples of structurally diverse amides is featured by mild conditions, complete chemoselectivity and regioselectivity, broad substrate scope
公开了一种空气稳定且方便的酰胺基苯并恶唑烷酮作为酰胺化试剂,可以直接酰胺化广泛的(杂)芳烃和烯烃的C(sp 2)-H键,以及未活化的C(sp 3)-H键Rh III催化。获得49种结构多样的酰胺实例的方法的特点是温和条件,完全的化学选择性和区域选择性,广泛的底物范围(不限于强杂环配位基团)以及对有价值的功能性取代基(如未保护的胺和羟基)的耐受性。该协议的合成适用性也通过生物学上重要的支架的后期功能化得到证明。