2,2,2-Trifluoroethyl trifluoromethanesulfonate → HCID 58204747, compound

Participants

Reaction Steps

A suspension of 2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-8-piperidin-4-yl-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulene trifluoro acetate (250 mg, 0.51 mmol) in THF (5 mL) was treated with TEA and the mixture flushed with argon. 2,2,2-trifluoroethyl trifluoromethane sulfonate (0.15 mL, 1.02 mmol) was added and the mixture stirred at RT for 72 h. The reaction mixture was partitioned between DCM and water, the organic layer washed with saturated aqueous sodium hydrogen carbonate followed by brine and then dried (MgSO4), filtered and concentrated in vacuo. The resultant residue was dissolved in 1.25 M HCl in methanol then concentrated in vacuo to give a solid which was triturated in IPA then diethyl ether. The resultant solid was subjected to RPHPLC (C18 column, gradient 10 to 98% methanol in water+0.1% HCO2H) to give 361 as a white solid (49 mg, 23%). LCMS: RT=4.59 min, [M+H]+=461. 1H NMR 400 MHz (DMSO-d6) δ: 8.33 (1 H, d, J=8.29 Hz), 7.91-7.91 (2 H, m), 7.08 (1 H, dd, J=8.36, 1.79 Hz), 6.92 (1 H, m), 5.91-5.90 (1 H, m), 4.51 (4 H, q, J=5.90 Hz), 3.21 (2 H, q, J=10.30 Hz), 3.03 (2 H, d, J=11.25 Hz), 2.45 (3 H, m), 1.76 (2 H, m), 1.69-1.67 (2 H, m), 1.49 (6 H, d, J=6.60 Hz)

Provenance & Evidence