Trifluoroacetic acid → HCID 178481241, compound

Participants

Reaction Steps

tert-Butyl 4-(4-(6-bromo-7-(4-((1-methyl-1H-imidazol-5-yl)methyl)piperazin-1-yl)-3H-imidazo[4,5-b]pyridin-2-yl)benzyl)piperazine-1-carboxylate (0.028 g, 0.043 mmol) was suspended in DCM (2.3 mL) and the mixture cooled in an ice bath. TFA (0.56 mL) was added and the resulting solution was allowed to warm up to room temperature and stirred for 2 h. The mixture was passed through an SCX column (2 g), the filtrate collected and the solvent removed in vacuo to give the title compound as a off-white solid (0.021 g, 89%); 1H-NMR (500 Mz, DMSO-d6): 2.27-2.36 (m, 4H), 2.55-2.62 (m, 4H), 2.72 (t, J=4.8 Hz, 4H), 3.50 (s, 2H, NCH2), 3.54 (s, 2H, NCH2), 3.61-3.66 (m, 4H), 3.68 (s, 3H, imidazole Me), 6.80 (s, 1H, imidazole 4-H), 7.45 (d, J=8.0 Hz, 2H, ArH, C6H4), 7.57 (s, 1H, imidazole 2-H), 8.14 (d, J=8.5 Hz, 2H, ArH, C6H4), 8.23 (s, 1H, imidazo[4,5-b]pyridine 5-H); LC (Method B)-MS (ESI, m/z) 1.66 min—550/552 [(M+H)+], Br isotopic pattern]; ESI-HRMS: Found: 550.2044, calculated for C26H33BrN9 (M+H)+: 550.2042.

Provenance & Evidence