INSERTION OF PTC-GENERATED DICHLOROCARBENE INTO C-B BO ND.A FACILE SYNTHESIS OF KETONES FROM ALKENES VIA ORGANOBORATES

摘要

The insertion of dichlorocarbene generated from chloroform byPhase Transfer Catalysis(PTC)into carbon-boron bond of dialkylborateanions 3,obtained by method A and B,resulted in the formation of the inter-mediates 5,which were oxidized with alkaline hydrogen peroxide to give thecorresponding dialkylketones in 36-77.9% yields.