Volume 128, Issue 14 pp. 4676-4680
Zuschrift

Exploiting Distal Reactivity of Coumarins: A Rhodium-Catalyzed Vinylogous Asymmetric Ring-Opening Reaction

Dr. Charles C. J. Loh

Dr. Charles C. J. Loh

Department of Chemistry, Davenport Chemical Laboratories, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6 Canada

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Matthias Schmid

Matthias Schmid

Department of Chemistry, Davenport Chemical Laboratories, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6 Canada

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Brendan Peters

Brendan Peters

Department of Chemistry, Davenport Chemical Laboratories, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6 Canada

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Dr. Xiang Fang

Dr. Xiang Fang

Department of Chemistry, Davenport Chemical Laboratories, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6 Canada

Laboratory for Advanced Material and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237 China

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Prof. Dr. Mark Lautens

Corresponding Author

Prof. Dr. Mark Lautens

Department of Chemistry, Davenport Chemical Laboratories, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6 Canada

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First published: 04 March 2016
Citations: 12

Abstract

While the utility of vinylogous enolates is well established in the setting of vinylogous aldol, Mannich, and Michael chemistries, literature reports concerning γ-reactivity are scarce for other reaction classes. Presented herein is an unprecedented example of vinylogous reactivity exemplified by the rhodium-catalyzed asymmetric ring-opening reaction of oxabicycles. This strategy also provides a powerful route to incorporate the biologically useful coumarin motif into the hydronapthalene scaffold.

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