Issue 60, 2021

Ruthenium-catalyzed room-temperature coupling of α-keto sulfoxonium ylides and cyclopropanols for δ-diketone synthesis

Abstract

Previous transition metal-catalyzed synthesis processes of δ-diketones are plagued by the high cost of the rhodium catalyst and harsh reaction conditions. Herein a low-cost, room temperature ruthenium catalytic method is developed based on the coupling of α-keto sulfoxonium ylides with cyclopropanols. The mild protocol features a broad substrate scope (47 examples) and a high product yield (up to 99%). Mechanistic studies argue against a radical pathway and support a cyclopropanol ring opening, sulfoxonium ylide-derived carbenoid formation, migratory insertion C–C bond formation pathway.

Graphical abstract: Ruthenium-catalyzed room-temperature coupling of α-keto sulfoxonium ylides and cyclopropanols for δ-diketone synthesis

Supplementary files

Article information

Article type
Communication
Submitted
17 May 2021
Accepted
28 Jun 2021
First published
28 Jun 2021

Chem. Commun., 2021,57, 7386-7389

Ruthenium-catalyzed room-temperature coupling of α-keto sulfoxonium ylides and cyclopropanols for δ-diketone synthesis

L. Fang, S. Fan, W. Wu, T. Li and J. Zhu, Chem. Commun., 2021, 57, 7386 DOI: 10.1039/D1CC02576G

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