AbstractThe synergic effect of choline chloride/urea as a deepeutecticsolvent was investigated in the synthesis of 2-aminothiophene derivatives via a three-component cyclocondensation of a ketone or an aldehyde with activated nitriles and elemental sulfur catalyzed by NaOH as cheap and highly accessible base. The advantages of this catalytic protocol are eco-friendly, easy to set up, reusability