Trifluoroacetic acid → HCID 66982147, compound

Participants

Reaction Steps

TFA (0.25 mL, 3.24 mmol) was added to a solution of a TFA salt of tert-butyl (1R,3S,5R)-3-(5-(2-(2-((1R,3S,5R)-2-(tert-butoxycarbonyl)-2-azabicyclo[3.1.0]hex-3-yl)-1H-benzimidazol-6-yl)-6-quinoxalinyl)-1H-benzimidazol-2-yl)-2-azabicyclo[3.1.0]hexane-2-carboxylate (65 mg) in DCM (0.5 mL) and the mixture was stirred at rt for 16 h. The volatiles were removed and the residue was triturated with Et2O. The resulting solid was collected via filtration funnel and rinsed with Et2O to yield a TFA salt of 2,6-bis(2-((1R,3S,5R)-2-azabicyclo[3.1.0]hexan-3-yl)-1H-benzo[d]imidazol-6-yl)quinoxaline (60 mg) as yellow solid. LC-MS retention time 1.51 min; m/z 525 [M+H]+. (Column PHENOMENEX® Luna 3.0×50 mm S10. Solvent A 90% water:10% methanol:0.1% TFA. Solvent B=10% water:90% methanol:0.1% TFA. Flow Rate=4 mL/min. Start % B=0. Final % B=100. Gradient Time=3 min. Wavelength=220). 1H NMR (400 MHz, MeOD) δ ppm 9.52 (1H, s), 8.58 (1H, s), 8.36 (1H, s), 8.22-8.33 (2H, m), 8.30 (1H, d, J=9.5 Hz), 8.08 (1H, s), 7.76-7.94 (2H, m), 7.83 (1H, d, J=9.5 Hz), 4.80-5.05 (2H, m), 3.45-3.61 (2H, m), 2.70-2.92 (2H, m), 2.50-2.67 (2H, m), 2.00-2.18 (2H, m), 1.26 (2H, br s), 1.04 (2H, br s).

Provenance & Evidence