Catalytic Intermolecular Hetero-Dehydro-Diels–Alder Cycloadditions: Regio- and Diasteroselective Synthesis of 5,6-Dihydropyridin-2-ones
摘要:
A novel catalyzed intermolecular heterodehydro-Diels-Alder reaction between push pull 1,3-dien-5-ynes and aldimines or silylaldimines is reported. The sequence is promoted both by gold(I) or silver(I) catalysts and leads to the diastereo- and regioselective formation of 5,6-dihydropyridin-2-ones.
Introducing a sulfone-embedded anhydride to the anhydride-imine reaction for the modular synthesis of N-heterocyclic sulfones bearing vicinal stereocenters
作者:Timothy K. Beng、Jorge Garcia、Jane Eichwald、Claire Borg
DOI:10.1039/d3ra01812a
日期:——
A flexible approach to sp3-rich N-heterocyclic sulfones, which hinges on the efficient annulation of an easy-to-prepare sulfone-embedded anhydride with 1,3-azadienes and aryl aldimines, is described.