Copper-Catalyzed Synthesis of α-Amino Imides from Tertiary Amines: Ugi-Type Three-Component Assemblies Involving Direct Functionalization of sp<sup>3</sup> C−Hs Adjacent to Nitrogen Atoms
from tertiary amines through copper-catalyzed three-component reactions involving the direct functionalization of sp3 C−Hs adjacent to nitrogen atoms. This reaction has demonstrated a tolerance to a wide range of functionalizations and can be performed under very mild conditions. A plausible mechanism has been proposed in which an Ugi-type cascadeassembly has been included.
Direct C–H Bond Imidation with Benzoyl Peroxide as a Mild Oxidant and a Reagent
作者:Tobias Brandhofer、Andrea Gini、Sebastian Stockerl、Dariusz G. Piekarski、Olga García Mancheño
DOI:10.1021/acs.joc.9b01765
日期:2019.10.18
A simple and mild Cu-catalyzed oxidative three-component oxidative Ugi-type method for the synthesis of a variety of substituted imides has been developed. In this direct imidation approach, benzoyl peroxide serves as both the oxidant and the carboxylate source, allowing not only the functionalization of C(sp3)-H bonds in α-position to an amine but also benzylic substrates. This procedure presents
Oxidative three-component reactions for the direct synthesis of α-amino amides and imides from tertiary amines have been developed. These reactions involve the functionalization of C(sp3)–H bonds adjacent to nitrogen atoms via mild aerobicoxidationusingvisiblelightphotoredoxcatalysis. The protocols are applicable to a wide range of amines and isocyanides, as well as water and carboxylic acids