Trifluoroacetic acid → Trifluoroacetate

Participants

Reaction Steps

A solution of 2-[(N-tbutoxycarbonlylamino)methyl]-tetrahydrothiophene 222 (500 mg, 2.3 mmol) in DCM (25 mL) was treated with trifluoroacetic acid (10 mL). The mixture was stirred at rt for 1 h before the DCM and excess TFA were removed under reduced pressure. The oily residue was triturated with diethyl ether to afford 223 as its trifluoroacetate salt (440 mg, 1.9 mmol, 83%) as an off-white solid, which was used without further purification.

Provenance & Evidence