Trifluoroacetic acid → 4-(4-Ethynyl-1,3-thiazol-2-yl)piperidine

Participants

Reaction Conditions

Reaction Steps

To a solution of tert-butyl 4-(4-ethynyl-1,3-thiazol-2-yl)piperidine-1-carboxylate (1.87 g, 6.40 mmol) in anhydrous dichloromethane (16 ml) was added at 0° C. trifluoroacetic acid (16 ml). After stirring at 0° C. for 30 mins, the mixture was concentrated under reduced pressure. Saturated aqueous sodium hydrogen carbonate solution was added to the residue, and the mixture was concentrated to dryness. The residue was washed with dichloromethane (extracted from solid phase) and the washing solution was concentrated to give 4-(4-ethynyl-1,3-thiazol-2-yl)piperidine (1.176 g, yield 98%) as a white solid.

Provenance & Evidence