Trifluoroacetic acid → HCID 22644767, compound

Participants

Reaction Steps

To a solution of tert-butyl 4-({[4-(2-butynyloxy)phenyl]sulfonyl)-2,2-dimethyl-thiomorpholine-3-carboxylate (0.31 g, 0.71 mmol) in dichloromethane (7 mL) was added trifluoroacetic acid (3 mL) and the resulting mixture was stirred at room temperature for 1 hour, after which the solvents were evaporated and toluene was added. The toluene and excess trifloroacetic acid were removed to give 0.25 g of (3S)-4-({[4-(2-butynyloxy)phenyl]sulfonyl)-2,2-dimethyl-thiomorpholine-3-carboxylic acid, which was used for the next step without further purification. Yield:92.6%. mp 129-131° C. %. Electrospray Mass Spec 381.8(M−H)−.

Provenance & Evidence