Trifluoroacetic acid → N-((1R,2S)-1-(4-(5-(aminomethyl)thiophen-2-yl)phenyl)-3-fluoro-1-hydroxypropan-2-yl)-2,2-dichloroacetamide

Participants

Reaction Steps

To a solution of tert-butyl ((5-(4-((1R,2S)-2-(2,2-dichloroacetamido)-3-fluoro-1-hydroxypropyl)phenyl)thiophen-2-yl)methyl)carbamate (140 mg, 0.238 mmol) in CH2Cl2 (10 mL) is added trifluoroacetic acid (1.0 mL) and the reaction mixture stirred at room temperature for 2 hours. The solvent is removed under reduced pressure and the residue washed with diethyl ether, then dissolved in 10% methanol in CH2Cl2 and evaporated to dryness. Washed with n-pentane and dried under vacuum to give the title compound (56 mg): 1HNMR (400 MHz, DMSO-d6) δ: 4.19-4.21 (m, 1H), 4.24-4.26 (m, 2H), 4.29-4.31 (m, 0.5H), 4.39-4.43 (m, 0.5H), 4.55-4.59 (m, 0.5H), 4.67-4.70 (m, 0.5H), 4.87 (bs, 1H), 5.90 (bs, 1H) 6.50 (s, 1H), 7.20 (d, J=3.64 Hz, 1H), 7.39 (d, J=8.24 Hz, 2H), 7.43 (d, J=3.68 Hz, 1H), 7.57 (d, J=8.16 Hz, 2H), 8.20 (bs, 3H), 8.59-8.63 (m, 1H). m/z (Cl) 388 [M−H].

Provenance & Evidence