Transformation of a hydroxyl into an acyl group on α-pyrone ring: a novel route to 3,4-diacylcoumarins
作者:Antigoni Kotali、Despina A. Nasiopoulou、Philip A. Harris、Madeleine Helliwell、John A. Joule
DOI:10.1016/j.tet.2011.10.086
日期:2012.1
The transformation of a hydroxyl into an acyl group, a transformation which has been extensively investigated on the benzene nucleus of several substrates, is now applied successfully for the first time to a heterocyclic ring and specifically to the pyrone ring of coumarin to yield novel 3,4-diacylcoumarins in good yields. The reaction involves formation of a new C–C bond.