1491167-86-2Relevant academic research and scientific papers
An environmental friendly approach for the synthesis of spiro[indoline-3',2-quinazoline]2',4(3H)-dione using 1-methylimidazolium hydrogen sulfate, as reusable catalyst
Kefayati, Hassan,Vazifeh, Masoumeh,Kazemi-Rad, Reyhaneh
, p. 1197 - 1201 (2013)
A facile and environmentally benign procedure for the synthesis of 3-aryl-1H-spiro[indoline-3',2-quinazoline] 2',4(3H)-dione from isatoic anhydride, aromatic amines and isatin derivatives in Bronsted acidic ionic liquid, 1-methylimidazoliumhydrogen sulfate, was reported. The ability to reuse the ionic liquid, the high yield, short reaction time and ease of purification are the important features of this process.
