Acetic Acid → HCID 22181296, compound

Participants

Reaction Steps

To a solution of 3-(cyclopropylmethyl)-2-[(4-ethoxyphenyl)methyl]-N-methyl-3H-imidazo[4,5-b]pyridin-6-amine (250.0 mg, 0.74 mmol) in acetonitrile (5 mL) at room temperature was added triethylamine (207 mL, 1.49 mmol) followed by 2-thiophenesulfonyl chloride (176 μL, 0.96 mmol). The mixture was stirred overnight. The reaction mixture was concentrated in vacuo. The residue was dissolved into EtOAc (10 ml) and Na2CO3 saturated aqueous solution (10 mL). The phases were separated and the aqueous phase was back-extracted with additional EtOAc (10 mL). The organic phases were combined, dried with MgSO4, filtered and concentrated in vacuo. The residue was purified using preparative HPLC (C-18 column, 20 to 80% [0.1% AcOH in AcCN solution] in 0.1% AcOH aqueous solution) to provide 72 mg of the AcOH salt of the title compound N-[3-(cyclopropylmethyl)-2-[(4-ethoxyphenyl)methyl]-3H-imidazo[4,5-b]pyridin-6-yl]-N-methyl-2-thiophenesulfonamide (18% yield from 3-(cyclopropylmethyl)-2-[(4-ethoxyphenyl)methyl]-N-methyl-3H-imidazo[4,5-b]pyridin-6-amine). 1H-NMR (400 MHz, d3-MeOD): δ 0.37 (m, 2H), 0.43 (m, 2H), 1.10 (m, 1H), 1.35 (t, J=7.0 Hz, 3H), 3.32 (s, 3H), 3.99 (t, J=7.0 Hz, 2H), 4.10 (d, J=7.2 Hz, 2H), 4.32 (s, 2H), 6.86 (d, J=8.8 Hz, 2H), 7.17 (d, J=8.8 Hz, 2H), 7.20 (m, 1H), 7.44 (d, J=5.3 Hz, 1H), 7.61 (d, J=2.3 Hz, 1H), 7.85 (d, J=5.1 Hz, 1H), 8.15 (d, J=2.3 Hz, 1H). MS (ESI) (M+H)+: 483.

Provenance & Evidence