Bicarbonate Ion → HCID 10115879, compound

Participants

Reaction Steps

To a solution of 3-[2-(cyclopentylamino)-4-pyrimidinyl]-2-(4-fluorophenyl)pyrazolo[1,5-α]pyridin-5-amine (60 mg, 0.15 mmol) in anhydrous pyridine (5 mL) was added methylsulfonyl chloride (36 mg, 0.3 mmol). The reaction was stirred at room temperature overnight. The reaction mixture was diluted with ethyl acetate, then saturated aquous bicarbonate was added. The phases were separated, the organic phase was washed with water, brine and dried (magnesium sulfate). Filtration and concentration, followed by flash chromatography (1:1 ethyl acetate-hexane) gave N-[3-[2-(cyclopentylamino)-4-pyrimidinyl]-2-(4-fluorophenyl)pyrazolo[1,5-α]pyridin-5-yl]methanesulfonamide (35 mg, 50%) as a solid. 1H-NMR (CDCl3): δ 8.42 (d, 1H), 8.15 (d, 1H), 8.05 (d, 1H), 7.60 (q, 2H), 7.13 (t, 2H), 6.90 (dd, 1H), 6.30 (d, 1H), 5.34 (d, 1H), 4.30 (m, 1H), 3.12 (s, 3H), 1.5–2.2 (m, 8H); 19F-NMR (CDCl3): δ −112.64; MS m/z 467 (M+1).

Provenance & Evidence