An iodine-catalyzed aerobicoxidative formal [4+2] annulation for the construction of polyfunctionalized pyridines in one step has been developed through the green reaction system of catalytic amounts of molecular iodine and amine in combination with oxygen. Various ketones and aldehydes were able to react with different chalcones and β, γ-unsaturated α-ketoesters through this reaction strategy. Synthetically
Thermal rearrangement of pyridinium anhydrobases: migration of N-substituents to methine carbon
作者:Alan R. Katritzky、Radi Awartani
DOI:10.1016/0040-4020(82)85086-2
日期:1982.1
N-Benzyl and N-methyl groups migrate to the methinecarbon atom on thermolysis of pyridiniumanhydrobases. Cross-over experiments indicate an intermolecular reaction, probably involving homolysis.