title: Simple and catalyst-free synthesis of oxoindolin-3-yl phosphonates.
abstract: An efficient, simple, and catalyst-free synthesis of dialkyl or diaryl 3-(dicyanomethyl)-2-oxoindolin-3-ylphosphonates by the reaction of dialkyl or diaryl phosphites and oxoindolin-3-ylidenemalononitriles under solvent-free conditions is reported. The reaction of imino isatins with dialkyl or diaryl phosphites results in the formation of dialkyl or diaryl 2-oxo-3-(arylamino)indolin-3-ylphosphonates.
authors.affiliation: Department of Chemistry, Shahid Beheshti University, G.C., P.O. Box 19396-4716, Tehran, Iran.
authors.forename: Ghazaleh Imani
authors.initials: GI
authors.lastname: Shakibaei
authors.forename: Saadi
authors.initials: S
authors.lastname: Samadi
authors.forename: Ramin
authors.initials: R
authors.lastname: Ghahremanzadeh
authors.forename: Ayoob
authors.initials: A
authors.lastname: Bazgir
mesh_terms: D002384:Catalysis; D007211:Indoles / Q000737:chemistry*; D063065:Organophosphonates / Q000138:chemical synthesis*
chemical_list: D007211:Indoles; D063065:Organophosphonates