Gold Catalysis: Dihydroisobenzofurans and Isochromanes by the Intramolecular Furan/Alkyne Reaction
作者:A. Stephen K. Hashmi、M. Wölfle、Filiz Ata、Melissa Hamzic、Ralph Salathé、Wolfgang Frey
DOI:10.1002/adsc.200600367
日期:2006.11
furyl alcohols and homofuryl alcohols was synthesized by reduction of furfurals or reaction of furyllithium compounds with epoxides and subsequent propargylation. The gold-catalyzed cycloisomerization of these products furnished dihydroisobenzofurans and isochromanes. Crystal structure analyses proved the sequence of the substituents for both classes of products. Unsaturated dicarbonyl compounds as side-products