Ziba Rafiee Samani, A. Mehranpour
May 23, 2022
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Journal
RSC Advances
Abstract
In this study, eight new zwitterionic derivatives were synthesized using a simple design method from the reaction of various 2-substituted 1,3-bis(dimethylamino)-trimethinium salts with malononitrile or ethyl 2-cyanoacetate in excellent yields in the presence of triethylamine in ethanol at reflux. The molecular structures of the new compounds were confirmed by IR, UV/vis, mass, 1H, and 13C NMR spectra as well as by elemental analyses.