Synthesis of Cyclopropanes via Hydrogen-Borrowing Catalysis
作者:Jessica L. Crompton、James R. Frost、Sam M. Rowe、Kirsten E. Christensen、Timothy J. Donohoe
DOI:10.1021/acs.orglett.3c01768
日期:2023.7.21
α-cyclopropanation of ketones using hydrogen borrowing (HB) catalysis is described. The transformation occurs via HB alkylation of a hindered ketone with subsequent intramolecular displacement of a pendant leaving group affording the cyclopropanated product. The leaving group can be installed in either the ketone or alcohol component of the HB system, giving access to α-cyclopropyl ketones via two complementary