N-Acetylhomopiperazine → 1-(4-(5-amino-6-(6-methyl-1H-benzo[d]imidazol-2-yl)pyrazin-2-yl)-1,4-diazepan-1-yl)ethanone

Participants

Reaction Conditions

Reaction Steps

A mixture of 5-bromo-3-(6-methyl-1H-benzimidazol-2-yl)pyrazin-2-amine (100 mg, 0.3288 mmol) and 1-(1,4-diazepan-1-yl)ethanone (701 mg, 4.932 mmol) in NMP (200.0 μL) was heated at 190° C. in the microwave for 2 hours. The reaction mixture was partitioned between DCM and water and the organics separated and concentrated to dryness. The resultant residue was purified by reverse phase preparative HPLC [Waters Sunfire C18, 10 uM, 100A column, gradient 10%-95% B (solvent A: 0.05% TFA in water, solvent B: CH3CN) over 16 minutes at 25 mL/min]. The fractions were collected, passed through a sodium bicarbonate cartridge and freeze-dried to give the title compound (67.7 mg, 54% Yield). 1H NMR (400.0 MHz, DMSO) d 1.80-1.94 (2H, m), 1.78 (3H, s), 2.43-2.46 (3H, s), 3.40 (2H, m), 3.63-3.83 (5H, m), 3.92 (1H, m), 7.04-7.11 (3H, m), 7.38-7.59 (2H, m), 7.90 (1H, m), 12.37 (1H, m) ppm; MS (ES+) 366

Provenance & Evidence