Facile and efficient synthesis of pyrroles and indoles via palladium-catalyzed oxidation of hydroxy-enamines and -amines
作者:Yutaka Aoyagi、Toshihiko Mizusaki、Akihiro Ohta
DOI:10.1016/s0040-4039(96)02134-x
日期:1996.12
The palladium-catalyzed oxidation of hydroxy-enamines, which were obtained by the condensation of beta-aminoalcohols and carbonyl compounds, proceeded to give the corresponding polysubstituted pyrroles and 4,5,6,7-tetrahydroindoles in good yields. The treatment of o-(2-hydroxyethyl)aniline with the palladium catalyst also gave indole in 78% yield. Copyright (C) 1996 Elsevier Science
2,3,8,8a-Tetrahydro-7H-oxazolo[3,2-a]pyridine: A new heterocyclic system
作者:Arturo San Feliciano、Esther Caballero、Juan A.P. Pereira、Pilar Puebla
DOI:10.1016/s0040-4020(01)86577-7
日期:1991.8
Compounds with the previously unreported skeleton of 2,3,8,8a-tetrahydro-7H-oxazolo [3,2-a]pyridine were prepared by reactions between alpha,beta-unsaturated ketones or aldehydes and N-hydroxyethylenamines of acetoacetate esters. Other compounds like 1,4-dihydropyridines, aminocyclohexene and cyclohexadiene derivatives were also formed as minor products.