title: A Clean synthesis of spiro[indoline-3,9'-xanthene]trione derivatives.
abstract: A simple, clean and efficient method for the synthesis of spiro[indoline-3,9'-xanthene]trione derivatives and spiro[acenaphthene-1,9'-xanthene]-1',2,8'(2'H,5'H)-trione by condensation reaction of dimedone and isatins or acenaphthene in aqueous media is reported.
authors.affiliation: Department of Chemistry, Shahid Beheshti University, Tehran, Iran.
authors.forename: Somayeh
authors.initials: S
authors.lastname: Ahadi
authors.forename: Hamid Reza
authors.initials: HR
authors.lastname: Khavasi
authors.forename: Ayoob
authors.initials: A
authors.lastname: Bazgir