Potassium Carbonate → HCID 67606429, compound

Participants

Reaction Steps

4-Bromo-1-(cyclopropylmethyl)-1H-benzotriazol-5-ol (25 mg, 0.093 mmol), bromoacetonitrile (34 mg, 0.28 mmol, 3 equiv) and potassium carbonate (64 mg, 0.47 mmol, 5 equiv) were combined in dimethylsulfoxide (1 mL) and placed into a preheated oil bath at 80° C. for 30 minutes. The mixture was cooled to ambient temperature, filtered and purified by preparative HPLC (20 to 95% water containing 0.5% trifluoroacetic acid: acetonitrile containing 0.5% trifluoroacetic acid). The appropriate fractions were poured into sodium bicarbonate (50 mL, aqueous saturated) and extracted with ethyl acetate (2×50 mL). The combined organic extracts were dried with sodium sulfate, filtered and concentrated in vacuo, providing the titled compound as a light brown solid: 1H-NMR (400 MHz, CDCl3) δ 7.55 (1H, d, J=9.2 Hz), 7.41 (1H, d, J=9.0 Hz), 4.91 (2H, s), 4.53 (2H, d, J=7.1 Hz), 1.45-1.35 (1H, m), 0.71-0.66 (2H, m), 0.52-0.48 (2H, m) ppm; high resolution mass spectrometry (ES+) m/z 307.0187 [(M+H)+; calculated for C12H12BrN4O: 307.0189].

Provenance & Evidence