Simple and catalyst-free synthesis of oxoindolin-3-yl phosphonates.
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.
Shakibaei
Ghazaleh Imani
GI
Department of Chemistry, Shahid Beheshti University, G.C., P.O. Box 19396-4716, Tehran, Iran.
Samadi
Saadi
S
Ghahremanzadeh
Ramin
R
Bazgir
Ayoob
A
D002384:Catalysis; D007211:Indoles / Q000737:chemistry*; D063065:Organophosphonates / Q000138:chemical synthesis*
D007211:Indoles; D063065:Organophosphonates