Cyano- N-(2-oxo-1,2-dihydroindol-3-ylidene)acetohydrazide was prepared by condensation of isatin with cyanoaceto-hydrazide in refluxing 1,4-dioxane. Subsequent reaction with a variety of electrophilic and nucleophilic reagents afforded novel heterocyclic compounds and spirooxoindoles. The IR, 1 H NMR and mass spectra of all the synthesised compounds are discussed.
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Mahmoud et al. (2013) studied this question.
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