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.
Bhovi, Manjunath G.; Gadaginamath, Guru S., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2005, vol. 44, # 4, p. 794 - 800
作者:Bhovi, Manjunath G.、Gadaginamath, Guru S.
DOI:——
日期:——
Efficient synthesis of pyrroles and 4,5,6,7-tetrahydroindoles via palladium-catalyzed oxidation of hydroxy-enamines
Facile and one-pot synthetic route of poly-substituted pyrroles and 4-oxo-4,5,6,7-tetrahydroindoles is established, which consists of three steps: (1) palladium-catalyzed oxidation of hydroxy-enamines by using tetrakis(triphenylphosphine)palladium and mesityl bromide oxidation system, (2) intramolecular cyclization, and (3) dehydration.