Synthesis and Structural Determination of Novel 5-Arylidene-3-N(2-alkyloxyaryl)-2-thioxothiazolidin-4-ones

As part of our project devoted to the synthesis of heterocycles including thiazole rings, some new 5-arylidene-2-thioxo-3-N-arylthiazolidin-4-ones were synthesized by Knoevenagel condensation. An interesting feature of these compounds is that their chirality is induced by that of their 3-N-(2-alkyloxyaryl)-2-thioxothiazolidin-4-one precursors, which in turn is due to the presence of a C2 axis of chirality. These new compounds were characterized by spectroscopic methods (IR, 1H-NMR, 13C-NMR). The structure of compound (Z)-(2g) was further determined by X-ray diffraction.

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