title: Gold-catalyzed intramolecular [3 + 2]-cycloaddition of arenyne-yne functionalities.
abstract: We report a new efficient intramolecular [3 + 2]-cycloaddition of unactivated arenyne (or enyne)-yne functionalities, catalyzed mainly by the AuPPh3SbF6 complex (2 mol %) under ambient conditions. The value of this cyclization is reflected by its applicability to a wide range of diyne substrates bearing various functional groups.
authors.affiliation: Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan, Republic of China.
authors.forename: Jian-Jou
authors.initials: JJ
authors.lastname: Lian
authors.forename: Po-Chiang
authors.initials: PC
authors.lastname: Chen
authors.forename: Yau-Ping
authors.initials: YP
authors.lastname: Lin
authors.forename: Hao-Chun
authors.initials: HC
authors.lastname: Ting
authors.forename: Rai-Shung
authors.initials: RS
authors.lastname: Liu