Cesium carbonate → HCID 68304682, compound

Participants

Reaction Conditions

Reaction Steps

7-(3-Hydroxy-benzenesulfonyl)-3,4,4a,9a-tetrahydro-1H-benzo[4,5]furo[2,3-c]pyridine-2-carboxylic acid tert-butyl ester (enantiomer 2, 42 mg, 0.097 mmol) and 4-bromomethyl-tetrahydropyran (26 mg, 0.15 mmol) were dissolved in acetonitrile (1 ml). Cesium carbonate (95 mg, 0.29 mmol) was added, and the mixture was heated to 60° C. overnight. The solvent was evaporated and the residue purified by preparative TLC (30% EtOAc/hexane). The residue was dissolved in 1 mL of 4N HCl in dioxane (1 mL) and stirred for 2 h. The solvent was evaporated and the mixture was triturated with ether. The resulting solid was filtered, washed with ether (twice) and dried at 90° C. for 2 h. MS m/z 430 [M+H]+. 1H-NMR (400 MHz, CDCl3): δ 1.28-1.40 (m, 2H), 1.46-1.58 (m, 1H), 1.63-1.71 (m, 2H), 1.95-2.07 (m, 1H), 2.09-2.18 (m, 1H), 2.92-3.00 (m, 2H), 3.28-3.46 (m, 4H), 3.52-3.61 (m, 2H), 3.82-3.94 (m, 4H), 4.90-4.96 (m, 1H), 7.22-7.28 (m, 1H), 7.45 (s, 1H), 7.49-7.61 (m, 4H), 8.98 (s, 1H).

Provenance & Evidence