title: Gold-catalyzed cascade annulations of 2-(ynol)aryl aldehydes: facile synthesis of benzochromanes and benzobicyclo[n.3.1]acetals.
abstract: Gold-catalyzed reactions of 2-(ynol)aryl aldehydes were investigated. Benzochromanes were obtained from the reaction when AuCl(3) was employed as the catalyst, whereas benzobicyclo[n.3.1]acetals were produced when triazole-gold was employed as the catalyst. Plausible mechanisms are discussed.
authors.affiliation: Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, USA. leping.liu@louisville.edu
authors.forename: Le-Ping
authors.initials: LP
authors.lastname: Liu
authors.forename: Gerald B
authors.initials: GB
authors.lastname: Hammond