Substituted .gamma.-butyrolactones. Part 37: reactions of (arylmethylene)furandiones with nucleophiles. A novel approach to the cyclolignan lactone skeleton
towards the development of organocatalyticenantioselectiveMichaeladditions of nitroalkanes to α,β‐unsaturated carbonyl compounds, highly substituted electrophiles remain challenging. β‐Arylidene‐α‐ketolactones and α‐ketolactams are used as highly electrophilic Michael acceptors that afford the corresponding products in moderate to good yields, with high enantioselectivities.
Substituted .gamma.-butyrolactones. Part 37: reactions of (arylmethylene)furandiones with nucleophiles. A novel approach to the cyclolignan lactone skeleton
作者:Adel Amer、Douglas Ho、Klaus Rumpel、Ralf I. Schenkel、Hans Zimmer