title: Formal (4+1) cycloaddition of methylenecyclopropanes with 7-aryl-1,3,5-cycloheptatrienes by triple gold(I) catalysis.
abstract: 7-Aryl-1,3,5-cycloheptatrienes react intermolecularly with methylenecyclopropanes in a triple gold(I)-catalyzed reaction to form cyclopentenes. The same formal (4+1) cycloaddition occurs with cyclobutenes. Other precursors of gold(I) carbenes can also be used as the C1 component of the cycloaddition.
authors.affiliation: Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, 43007 Tarragona (Spain).
authors.forename: Yahui
authors.initials: Y
authors.lastname: Wang
authors.forename: Michael E
authors.initials: ME
authors.lastname: Muratore
authors.forename: Zhouting
authors.initials: Z
authors.lastname: Rong
authors.forename: Antonio M
authors.initials: AM
authors.lastname: Echavarren
keywords: (4+1) cycloaddition; carbenes; cyclobutenes; gold catalysis; methylenecyclopropanes