Journal
ORGANIC LETTERS
Volume 25, Issue 25, Pages 4688-4693Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.3c01568
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An efficient Au(III)/Ag(I) co-catalytic platform has been established for the synthesis of cyclopentadienes through amine-release annulation of enaminones with alkynes. The generated vinylcarbenoids undergo a tandem annulation process with enaminones to give aminocyclopentenes as key intermediates. This bimetal catalytic system is compatible with a broad substrate scope under mild reaction conditions, and the obtained cyclopentadienes can undergo late-stage modifications into complex molecules with high chemo- and regioselectivities.
An efficient Au(III)/Ag(I) co-catalytic platform hasbeen establishedfor the synthesis of cyclopentadienes through amine-release annulationof enaminones with alkynes. Vinylcarbenoids that were generated from1,2-migration of propargyl esters may undergo a tandem annulationprocess with enaminones to give aminocyclopentenes as key intermediates.The bimetal catalytic system is compatible with a broad substratescope under mild reaction conditions. The obtained cyclopentadienesare allowed to undergo late-stage modifications into complex moleculeswith high chemo- and regioselectivities.
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