Water → HCID 67410299, compound

Participants

Reaction Steps

To a solution of water (150 mL) and urea hydrogen peroxide (916 mg, 9.45 mmol) was added sodium hydroxide (220 mg, 5.51 mmol) and the reaction was stirred at room temperature. Once a clear solution was obtained, the reaction was placed in an ice bath and fitted with an addition funnel. A solution of 2-[(R)-5-(6-cyano-pyridin-3-yl)-indan-1-yl]-2,7-diaza-spiro[3.5]nonane-7-carboxylic acid tert-butyl ester (4-1c, 700 mg, 1.58 mmol) in 50 mL EtOH was added dropwise via the funnel over 30 minutes. The reaction was warmed to room temperature and was stirred overnight. The reaction mixture (a white suspension) was filtered and the solids were washed with 50 mL water and air-dried to give 440 mg (60%) of the title compound as an off-white powder. MS (ES+) 463.1 (M+H)+. 1H NMR (DMSO-d6) δ 1.39 (s, 9H), 1.54-1.62 (m, 4H), 1.81-1.91 (m, 1H), 2.06 (dd, 1H), 2.76-2.87 (m, 1H), 2.94-3.02 (m, 3H), 3.10 (d, 2H), 3.24 (br s, 4H), 3.86 (dd, 1H), 7.40 (d, 1H), 7.55 (d, 1H), 7.62-7.68 (m, 2H), 8.09 (d, 1H), 8.12 (br s, 1H), 8.22 (dd, 1H), 8.89 (d, 1H).

Provenance & Evidence