Tetrahydrofuran → HCID 71257313, compound

Participants

Reaction Steps

Example 61 (0.2 g, 0.41 mmol) was dissolved in DCM and added TEA (0.33 g, 3.3 mmol). This mixture was stirred at rt for 30 mins. After 30 mins reaction mixture cooled to 0° C. and added ethyl 3-(chlorosulfonyl)propanoate (245 mg, 1.2 mmol). This reaction continued for 30 mins at rt. Work up (H2O/DCM) followed by column purification on combiflash using a gradient mixture of EtOAc and Petether (65:35) as eluent afforded ethyl 2-{4-[2-(2-fluoro-4-(methylsulfonyl)phenyl)benzo[d]oxazol-5-yl]piperidin-1-ylsulfonyl}acetate. Ethyl 2-{4-[2-(2-fluoro-4-(methylsulfonyl)phenyl)benzo[d]oxazol-5-yl]piperidin-1-ylsulfonyl}acetate (100 mg, 0.19 mmol) was dissolved in THF (5 ml) and added Lithiumaluminium hydride (14 mg, 0.37 mmol) at 0° C. This mixture was stirred at same temperature for 90 mins. After completion of the reaction, reaction mass quenched with 1N HCl (7 ml). Work up (DCM/H2O) followed by purification on combiflash using a gradient mixture of EtOAc and Petether (65:35) as eluent afforded the titled compound (120 mg) as an off-white solid. M.P.: 204-206° C. 1H-NMR (δ ppm, DMSO-d6, 400 MHz): 8.47 (t, J 8.03, 1H), 8.06 (dd, J 1.6, 10.1, 1H), 7.97 (dd, J 1.6, 8.2, 1H), 7.82-7.75 (m, 2H), 7.43 (dd, J 1.5, 8.6, 1H), 4.66 (t, J 5.3, 1H), 3.74 (d, J 12.1, 2H), 3.50 (q, J 6.1, 2H), 3.38 (s, 3H), 3.12-3.06 (m, 2H), 2.98-2.80 (m, 3H), 1.96-1.90 (m, 2H), 1.88-1.81 (m, 2H), 1.79-1.69 (m, 2H).

Provenance & Evidence