Dearomative [4 + 3] cycloaddition of furans with vinyl- <i>N</i> -triftosylhydrazones by silver catalysis: stereoselective access to oxa-bridged seven-membered bicycles

Abstract

A practical dearomative [4 + 3] cycloaddition of furans with vinylcarbenes to access oxa-bridged seven-membered carbocycles, with complete and predictable stereoselectivity, is achieved by merging silver catalysis and vinyl- N -triftosylhydrazones.