Trifluoroacetic acid → HCID 118061505, compound

Participants

Reaction Steps

To a solution of Intermediate 1J (3.0 g, 8.32 mmol) in dichloromethane (20 mL) was added TFA (10.26 mL, 133 mmol) dropwise at 0° C. and stirred at room temperature for 3 h. Volatiles were removed, and the residue was quenched with 10% NaHCO3 solution. The off-white solid product 1K (2 g, 92%) was filtered and dried under vacuum and was used in the next step without further purification. MS(ES): m/z=261 [M+H]+; 1H NMR (400 MHz, DMSO-d6) δ ppm 7.66-7.73 (m, 2H), 7.22-7.25 (m, 2H), 7.21 (bs, 1H), 7.20 (bs, 1H), 3.98-4.05 (m, 4H), 3.13 (bs, 2H), 2.63 (s, 1H).

Provenance & Evidence