In continuation of our synthetic work with 3-amino-2- substituted thiophenes previously developed in our labo- ratory,1 we propose here a new route to 2-thienylimino- 1,3-thiazolidin-4-ones. The synthesis has been devised to use this kind of heterocycle as a scaffold for preparing new biologically active compounds. 2-Heteroarylimino-1,3-thiazolidin-4-ones, in particular thiazolimino- and benzothiazolimino-types, have previ- ously been described in the literature and used as ...