Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
A Simple and Efficient One-Pot Synthesis of Substituted Benzo[b]furans by Sonogashira Coupling-5-endo-dig Cyclization Catalyzed by Palladium Nanoparticles in Water Under Ligand- and Copper-Free Aerobic Conditions
Ist Teil von
European Journal of Organic Chemistry, 2010-11, Vol.2010 (31), p.6067-6071
Ort / Verlag
Weinheim: WILEY-VCH Verlag
Erscheinungsjahr
2010
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
A simple and efficient procedure for the synthesis of 2‐substituted benzo[b]furan derivatives has been developed by the reaction of 2‐iodophenols and arylacetylenes in water catalyzed by palladium nanoparticles generated in situ in open air. The reaction does not require any additive, ligand, or co‐catalyst. The reaction occurs through Sonogashira coupling of 2‐iodophenols with phenylacetylenes followed by 5‐endo‐dig cyclization. A series of functionalized benzo[b]furan derivatives was obtained in high yields by this procedure.
A simple and efficient procedure for the synthesis of 2‐substituted benzo[b]furan derivatives has been developed by the reaction of 2‐iodophenols and arylacetylenes in water catalyzed by palladium nanoparticles generated in situ in open air.