title: Gold-catalyzed Intermolecular [4C + 3C] Cycloaddition Reactions.
abstract: In the presence of the N-heterocyclic carbene gold catalyst (NHC-AuIPr, 7), propargyl esters 1a-f and 13 undergo a [4C + 3C] cycloaddition reaction with cyclopentadiene and furan under mild conditions. The evidence suggests the formation of the seven-membered ring occurs by a direct cycloaddition process, rather than a stepwise cyclopropanation/Cope rearrangement sequence.
authors.affiliation: Department of Chemistry and Biochemistry, Miami University, Oxford, OH 45056.
authors.forename: Benjamin W
authors.initials: BW
authors.lastname: Gung
authors.forename: Lauren N
authors.initials: LN
authors.lastname: Bailey
authors.forename: Josh
authors.initials: J
authors.lastname: Wonser