A tandem method for the synthesis of 2-hydrazolyl-4-thiazolidinones (5) from commercially available materials in a 3-component reaction has been developed. The reaction connects aldehydes, thiosemicarbazides, and maleic anhydride, effectively assisted by microwave irradiation. The synthesis of a new type of compound, 2-hydrazolyl-5,5-diphenyl-4-thiazolidinone (7), obtained by treatment of thiosemicarbazone with benzil in basic media is also reported. HOMO/LUMO energies, orbital coefficients, and charge distribution were used to explain the proposed reaction mechanism. (C) 2008 Elsevier Ltd. All rights reserved.
Synthesis and study of the biological properties of derivatives of 5-carboxymethylthiazolidine-2,4-dione and of thiocarbohydrazide
作者:M. A. Kaldrikyan、A. V. Khekoyan、Yu. Z. Ter-Zakharyan、R. V. Paronikyan、G. M. Stepanyan