Sodium Hydroxide → HCID 86679701, compound

Participants

Reaction Steps

To a solution of silver nitrate (0.55 g, 3.25 mmol) in water (10 mL) was added a solution of sodium hydroxide (0.26 g, 6.50 mmol) in water (5 mL) to give a brown precipitate. 5-(pyridin-3-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-3-carbaldehyde (CXXXII) (0.40 g, 1.30 mmol) dissolved in 1,4-dioxane (3 mL) was added to the reaction which was stirred at room temperature for 2 h. The reaction was then extracted with diethyl ether. The aqueous layer was separated and carefully brought to pH=3 with 10% aqueous HCl. The aqueous layer was then extracted five times with iPrOH/chloroform (1/9). The combined organic layers were then dried (MgSO4) and concentrated to afford 5-(pyridin-3-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-3-carboxylic acid (CXXXIII) (0.30 g, 0.93 mmol, 70% yield) as a white solid. 1H NMR (DMSO-d6) δ ppm 13.28 (br, 1H), 8.93 (s, 1H), 8.60 (d, J=4.1 Hz, 1H), 8.32 (d, J=0.83 Hz, 1H), 8.14-8.12 (m, 1H), 8.00 (d, J=8.8 Hz, 1H), 7.86 (dd, J=8.8, 1.7 Hz, 1H), 7.52 (dd, J=7.8, 4.7 Hz, 1H), 6.04 (dd, J=9.3, 2.3 Hz, 1H), 3.92-3.90 (m, 1H), 3.83-3.78 (m, 1H), 2.44-2.37 (m, 1H), 2.08-2.02 (m, 2H), 1.79-1.76 (m, 1H), 1.63-1.61 (m, 2H).

Provenance & Evidence