Gold-Catalyzed C–H Bond Functionalization of Metallocenes: Synthesis of Densely Functionalized Ferrocene Derivatives
作者:Enol López、Giacomo Lonzi、Luis A. López
DOI:10.1021/om500638t
日期:2014.11.10
A convenient process for the direct functionalization of ferrocene that exploits the high electrophilic character of gold–vinyl carbenoids catalytically generated from vinyldiazo compounds and gold complexes is reported. This process takes place with complete regioselectivity (vinilogous reactivity). The synthesis of the corresponding ruthenocene analogues has also been achieved. Preliminary studies
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-catalyzed intermolecular formal (3+2) cycloaddition of stabilized vinyldiazo derivatives and electronically unbiased allenes
作者:Enol López、Giacomo Lonzi、Javier González、Luis A. López
DOI:10.1039/c6cc04106j
日期:——
The reaction of electronically unbiased allenes with alkenyldiazo compounds in the presence of gold catalysts provided alkylidenecyclopentene derivatives resulting from a formal intermolecular (3+2) carbocyclization. A stepwise mechanism involving initial...
Reactivity of Stabilized Vinyldiazo Compounds toward Alkenyl- and Alkynylsilanes under Gold Catalysis: Regio- and Stereoselective Synthesis of Skipped Dienes and Enynes
作者:Olaya Bernardo、Kota Yamamoto、Israel Fernández、Luis A. López
DOI:10.1021/acs.orglett.1c01381
日期:2021.6.4
the gold-catalyzed reaction of vinyldiazo compounds and alkenylsilanes to produce skipped dienes, which are common structural motifs in an array of bioactive compounds. This carbon–carbon bond-forming transformation proceeds with complete regio- and stereoselectivity with the silyl group serving as a regio- and stereocontrolling element. Likewise, the use of alkynylsilanes as reaction partners yielded
Synthesis of Functionalized Cyclopentene Derivatives from Vinyldiazo Compounds and Vinylazides through Sequential Copper-Promoted [3+2] Cycloaddition/Azide Rearrangement
作者:Enol López、Luis A. López
DOI:10.1002/anie.201701572
日期:2017.4.24
The reaction of vinylazides with alkenyldiazo compounds in the presence of [Cu(CH3CN)4][BF4] provided cyclopentene derivatives with retention of the azide functionality. This process likely involves a sequence comprising: 1) decomposition of the diazo component with generation of a copper alkenylcarbene species; 2) stepwise regioselective [3+2] cycloaddition; 3) allylic azide rearrangement. This method