A solvent-free synthesis of (thio)ester derivatives using FeCl3 as a heterogeneous catalyst

<p>A simple, solvent-free method for the synthesis of (thio)esters from simple acid chlorides at room temperature is reported. Simple FeCl₃ (5 mol%) enables facile, near complete conversion of equimolar starting materials in high selectivity. Recycling of the catalyst has been demonstrated.</p>