Synthesis of 3-Ethyl-4-methyl-1,5-dihydro-2H-pyrrol-2-one by Novel Palladium(II)-Catalyzed Cyclization and Ring-Closing Metathesis
作者:Subhash Chavan、Ashok Pathak、Kailash Pawar
DOI:10.1055/s-0034-1379985
日期:——
Abstract Synthesis of 3-ethyl-4-methyl-1,5-dihydro-2H-pyrrol-2-one is described starting from commercially available allylamine and 4-methoxybenzylamine employing palladium-catalyzed cyclization or ring-closingmetathesis as the keysteps. Synthesis of 3-ethyl-4-methyl-1,5-dihydro-2H-pyrrol-2-one is described starting from commercially available allylamine and 4-methoxybenzylamine employing palladium-catalyzed
Synthesis of γ-Lactams from Acrylamides by Single-Carbon Atom Doping Annulation
作者:Hayato Fujimoto、Bunta Nakayasu、Mamoru Tobisu
DOI:10.1021/jacs.3c07052
日期:2023.9.13
A protocol for single-carbon atom doping annulation is reported, which enables the conversion of acrylamides into homologated γ-lactams through the cleavage of two σ-bonds and the formation of four new σ-bonds at the single carbon center. The key strategy is the use of N-heterocyclic carbenes as an atomic carbon equivalent by acting as carbon atom donors through the loss of a 1,2-diimine moiety. Experimental