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Synthesis 2017; 49(18): 4327-4334
DOI: 10.1055/s-0036-1589024
DOI: 10.1055/s-0036-1589024
paper
Asymmetric Friedel–Crafts/Michael Reaction of Indoles and Pyrroles with Coumarin-3-carbonylates
This study was performed under financial support of the Russian Science Foundation (Grant 14-23-00186).Further Information
Publication History
Received: 27 March 2017
Accepted: 07 April 2017
Publication Date:
07 June 2017 (online)
Abstract
Asymmetric Friedel–Crafts reactions of indoles or pyrroles with coumarin-3-carboxylates catalyzed by Cu(OTf)2 complexes with chiral bis(oxazoline) ligands have been developed. The highest ee (up to 82%) was achieved for indole with a nitro derivative of coumarin-3-carboxylate.
Key words
enantioselective catalysis - BOX ligands - copper - 3,4-dihydrocoumarins - asymmetric Friedel–Crafts reactionSupporting Information
- Supporting information for this article is available online at https://doi.org/10.1055/s-0036-1589024.
- Supporting Information
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