B(C6F5)3-catalyzed cyclopropanation of 3-alkenyl-oxindoles with diazomethanes.
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DOI: 10.1039/d2cc06744g
Abstract: Spirocyclopropane-oxindoles are key motifs in biologically active compounds and are versatile synthetic intermediates. Herein, we report a metal-free, B(C6F5)3 catalyzed cyclopropanation of 3-alkenyl-oxindoles with diazomethanes. This provides 25 variants of spirocyclopropane-oxindole derivatives. These spirocyclopropane-oxindole products… read more here.
Keywords: cyclopropanation alkenyl; catalyzed cyclopropanation; alkenyl oxindoles; c6f5 catalyzed ... See more keywords