3,4-(Methylenedioxy)aniline as Precursor to the Synthesis of Thiazolidin-4-ones (IV). -These referred heterocycles (IV) are potent biologically active compounds due to the presence of two important moieties, thiazolidinone and 1,3-benzodioxole. -(MASTELOTO, H. G.; DRAWANZ, B. B.; BERWALDT, G. A.; NEUENFELDT, P. D.; SIQUEIRA, G. M.; CUNICO*, W.; Monatsh. Chem. 146 (2015) 2, 327-334, http://dx.doi.org/10.1007/s00706-014-1338-y ; Lab. Quim. Apl. Bioativos, Univ. Fed. Pelotas, 96010 Pelotas, RS, Brazil; Eng.) -A. Forchert 30-183