Reactivity of Stabilized Vinyl Diazo Derivatives toward Unsaturated Hydrocarbons: Regioselective Gold-Catalyzed Carbon-Carbon Bond Formation
作者:José Barluenga、Giacomo Lonzi、Miguel Tomás、Luis A. López
DOI:10.1002/chem.201203217
日期:2013.1.28
alkenyldiazo compounds and unsaturated substrates. The process represents a new CC bond‐formation reaction in which alkenes, alkynes, and arenes are active reagents for the Cγ‐allylation, ‐allenylation, and ‐arylation, respectively, of alkenyldiazo substrates (see scheme). The reactivity pattern is likely to rely on the formation of a highly electrophilic alkenylgold carbenoid, which may be involved in a
Gold(I)-catalyzed intermolecular hydroarylation of allenes with nucleophilic arenes: scope and limitations
作者:Michael A. Tarselli、Ann Liu、Michel R. Gagné
DOI:10.1016/j.tet.2008.10.110
日期:2009.2
The addition of nucleophilic methoxyarenes to allenes proceeds at room temperature in dichloromethane with a catalytic amount of phosphite-gold(I) precatalyst and silver additive. The addition is regioselective for the allene terminus, and generates E-allylation products without the need for prefunctionalization of the synthons as organometallics or allyl bromides. Coordinating heteroaromatics and