title: Facile Synthesis of Spiro[cyclohexane-1,3’-indoline]-2,2’-diones
abstract: Abstract Spiro[cyclohexane-1,3’-indoline]-2,2’-diones were easily prepared in good to high yields by the oxidation of N -aryl- N -methyl-2-oxocyclohexane-1-carboxamides in one pot with a short reaction time. The spiroindolinediones could be important for the total synthesis of natural products.
journal: Heterocyclic Communications