119771-49-2Relevant articles and documents
Synthesis of Spiro Indolin-2-one Derivatives
El-Ahl, Abdel Asis S.,Afeefy, Hussein,Metwally, Mohamed Abbas
, p. 201 - 222 (2007/10/02)
The reactions of active methylene compounds and hydrazine with (2-oxoindolin-3-ylidene)-malononitrile and -acetophenone in ethanol/piperidine have been studied.Both substances gave Michael-type adducts followed by cyclization.The structures of the products were determined from the results of elemental analysis, IR, 1H-NMR and mass spectra.