2,2,2-Trifluoroethyl trifluoromethanesulfonate → tert-butyl (+/-)-6-methoxy-6-methyl-4-(6-(6-(1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl)-1H-pyrazolo[4,3-c]pyridin-1-yl)pyridin-2-yl)-1,4-diazepane-1-carboxylate

Participants

Reaction Steps

To a solution of tert-butyl 4-(6-(6-(1H-pyrazol-4-yl)-1H-pyrazolo[4,3-c]pyridin-1-yl)pyridin-2-yl)-6-methoxy-6-methyl-1,4-diazepane-1-carboxylate (265 mg, 0.53 mmol) in DMF (15 mL) was added 2,2,2-trifluoroethyl trifluoromethanesulfonate (610 mg, 2.63 mmol). The mixture was stirred at room temperature for 18 hours. The reaction mixture was quenched with brine, extracted with DCM (100 mL×3), and concentrated under reduced pressure. The residue was purified by preparative HPLC to afford tert-butyl(±)-6-methoxy-6-methyl-4-(6-(6-(1-(2,2,2-trifluoroethyl)-1H-pyrazol-4-yl)-1H-pyrazolo[4,3-c]pyridin-1-yl)pyridin-2-yl)-1,4-diazepane-1-carboxylate as a white solid (264 mg, 85%). MS (ESI) m/z: 587 [M+H]+.

Provenance & Evidence