Non-thermal, solvent-free condensation of several aryl methyl ketones with amines
and elemental sulfur is efficiently conducted using ultrasonic irradiation within short time periods.
Consequently, various thioacetamides are conveniently synthesized. Similar experiments
at controlled temperature (25 ± 1◦ C) resulted in comparable yields, showing the promotional
role of ultrasound irradiation in the progress of the reaction.
