4 years ago

Radical Cation Cyclopropanations via Chromium Photooxidative Catalysis

Radical Cation Cyclopropanations via Chromium Photooxidative Catalysis
Francisco J. Sarabia, Eric M. Ferreira
The chromium photocatalyzed cyclopropanation of diazo reagents with electron-rich alkenes is described. The transformation occurs under mild conditions and features specific distinctions from traditional diazo-based cyclopropanations (e.g., avoiding β-hydride elimination, chemoselectivity considerations, etc.). The reaction appears to work most effectively using chromium catalysis, and a number of decorated cyclopropanes can be accessed in generally good yields.

Publisher URL: http://dx.doi.org/10.1021/acs.orglett.7b01095

DOI: 10.1021/acs.orglett.7b01095

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