Ghazaleh Imani Shakibaei, R. Ghahremanzadeh, A. Bazgir
Aug 2, 2013
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Phosphorus, Sulfur, and Silicon and the Related Elements
Abstract
Abstract A highly efficient and green method for the synthesis of new 2-(3-(dicyanomethyl)-2-oxoindolin-3-ylthio)acetic acids is described using magnetically recoverable and reusable CuFe2O4 nanoparticles. A wide variety of aryl isatylidene malononitrils underwent Micheal addition with thioacids to afford novel 2-(3-(dicyanomethyl)-2-oxoindolin-3-ylthio)acetic acids in good to excellent yields. The reaction protocol is operationally simple and mild. Moreover, water as solvent makes the reaction procedure eco-friendly and economically viable. All products were characterized by NMR and IR spectroscopies. GRAPHICAL ABSTRACT