Event submissions
In this paper, a simple, green, and efficient approach was used to the synthesis of various 2-aminothiophenes derivatives with excellent yields (97%) in a short reaction time under ball milling technique without any solvent and any catalyst through Gewald reaction. A direct condensation of an equimolar amount of an ethyl acetoacetate/acetyl acetone, malononitrile/ethyl cynoacetate, and elemental sulfur under ball milling offered 2-aminothiophenes derivatives in 30 min at 750 rpm.