Palladium-catalysed arylation of tert-cyclobutanols with arylbromide involving enantioselective C-Cbondcleavage affords chiral ketones with moderate to good enantioselectivity.
A novel enantioselective C-C bondcleavage has been achieved using palladium catalysts and chiral N,P-bidentate ligands in the asymmetric arylation, vinylation, and allenylation of tert-cyclobutanols. In these reactions, the enantioselective beta-carbon elimination of Pd(II) alcoholate formed in situ is the key step. Treatment of tert-cyclobutanols with arylating reagents in toluene in the presence