A Regioselective Synthesis of Benzopinacolones through Aerobic Dehydrogenative α-Arylation of the Tertiary sp<sup>3</sup>CH Bond of 1,1-Diphenylketones with Aromatic and Heteroaromatic Compounds
作者:Nagnath Yadav More、Masilamani Jeganmohan
DOI:10.1002/chem.201404308
日期:2015.1.12
1‐diphenylketone. Subsequent α‐arylation was achieved at the methene sp3 carbon atom of the substituted ketone. A variety of substitutedaromatic and heteroaromatic compounds were compatible with this reaction. In addition, benzopinacolones were converted into stericallyhindered, tetrasubstituted alkenes and polycyclic aromaticcompounds.
An efficient regioselective protocol for the C–C bond formation by the unexpected α,α-diarylation of aromatic ketones with unactivated arenes in the presence of seleniumdioxide and boron trifluoride etherate has been developed. The generality and functional tolerance of this protocol is demonstrated by the synthesis of a series of triarylethanones.