A series of catalysts based on supportedcoppernanoparticles have been prepared and tested in the amide bond formation from tertiary amines and acid anhydrides, in the presence of tert‐butyl hydroperoxide as an oxidant. Coppernanoparticles on zeolite Y (CuNPs/ZY) was found to be the most efficient catalyst for the synthesis of amides, working in acetonitrile as solvent, under ligand‐ and base‐free
Versatile and chemoselective C–C bond forming methods for the one-pot transformation of amides into other classes of compounds are highly demanding. In this report, we demonstrate the reductive addition of isocyanoacetates to common amides and lactams to produce 5-methoxyoxazoles or bicyclic imidazolines. This one-potprocedure involves partial reduction of amides with Schwartz reagent and chemoselective
Asymmetric remote C–H borylation of aliphatic amides and esters with a modular
iridium catalyst
作者:Ronald L. Reyes、Miyu Sato、Tomohiro Iwai、Kimichi Suzuki、Satoshi Maeda、Masaya Sawamura
DOI:10.1126/science.abc8320
日期:2020.8.21
tertiary amides and esters. A chiralC–H activation catalyst was modularly assembled from an iridium center, a chiral monophosphite ligand, an achiral urea-pyridine receptor ligand, and pinacolatoboryl groups. Quantum chemical calculations support an enzyme-like structural cavity formed by the catalyst components, which bind the substrate through multiple noncovalentinteractions. Versatile synthetic utility
Titanocene(II)-promoted reaction of anilides with thioacetals followed by treatment with a small amount of water gave reductivealkylation products, anilines with a secondary alkyl group.
Conversion of α-Anilino Alkenenitriles to Amides by Chemoselective Palladium-Catalyzed Arylations
作者:Chau-Chen Yang、Huo-Mu Tai、Pei-Jiun Sun
DOI:10.1055/s-1997-5783
日期:1997.7
The reactions of α-anilino alkenenitriles with iodobenzene catalyzed by palladium gave amides and benzonitrile. A general mechanism is proposed to explain the chemoselective arylation at the cyano group.