title: Gold-catalyzed cycloisomerization of o-alkynylbenzaldehydes with a pendant unsaturated bond: [3 + 2] cycloaddition of gold-bound 1,3-dipolar species with dipolarophiles.
abstract: [reaction: see text] A new and novel Au-catalyzed cycloisomerization of ynals bearing a pendant unsaturated bond leading to synthetically valuable [6.7.n]-tricyclic compounds were developed. This study strongly supports the intermediacy of [3 + 2] cycloaddition proposed by DFT calculation and provides an easy access to key skeletons found in a variety of natural products.
authors.affiliation: Department of Chemistry, Hanyang University, Sungdong-Gu, Seoul 133-791, Korea.
authors.forename: Nakjoong
authors.initials: N
authors.lastname: Kim
authors.forename: Yeongmi
authors.initials: Y
authors.lastname: Kim
authors.forename: Wooram
authors.initials: W
authors.lastname: Park
authors.forename: Dokyung
authors.initials: D
authors.lastname: Sung
authors.forename: Aruna Kumar
authors.initials: AK
authors.lastname: Gupta
authors.forename: Chang Ho
authors.initials: CH
authors.lastname: Oh