2,4,6-Trichloro-[1,3,5]-triazine (TCT) was added at room temperature to a solution of propane-1-sulfonic acid in acetone dry, followed by NEt3 dropwise. The resulting mixture was irradiated to 80 °C (50 W of MW power) for 20 min in a sealed tube (10 mL pressure-rated reaction vial) in a self-tuning single-mode irradiating synthesizer. The mixture was cooled rapidly to room temperature by passing compressed air through the microwave cavity for 1 min. After cooling to room temperature, the precipitate was filtered off on Celite to afford 1-Propanesulfonyl chloride[1].
