user‐friendly oxidative dualheterogeneous catalytic system capable of promoting polysubstituted pyridines as unique products from simple activated Michael acceptors, 1,3‐dicarbonyls and ammonium acetate. This metal‐free environmentally‐respectful and totally regioselective domino reaction proved to be a great strategy to access bi‐ and triaryl‐type pyridines as well as challenging bi‐ and triheteroaryl‐type
for the conversion of α,β-unsaturated carbonyls to multi-substituted benzenes using allylicphosphoniumylide reagents has been developed. The substituents and their positions on the benzene ring are controllable and predictable by the choice of an appropriate combination of α,β-unsaturated carbonyl compounds and ylides.
Palladium(II)-catalyzed double carbonylation of organic halides in the presence of amines: α-Ketoamide synthesis
作者:Toshiaki Kobayashi、Masato Tanaka
DOI:10.1016/s0022-328x(00)85589-8
日期:1982.7
Aryl, hetero-aryl, and vinylic halides react with carbon monoxide (40 atm pressure or less) and a secondary amine at 60–100°C in the presence of a catalytic amount of palladium compound to form α-ketoamides, in addition to simple amides as by-products. When a primary amine was used in place of a secondary one, an imine of the α-ketoamide was readily obtained.