Pyridine → HCID 23647760, compound

Participants

Reaction Steps

A mixture of Example 128C (0.033 g, 0.200 mmol) in dichloromethane (1 mL) was treated with 1M trimethylsilyl chloride in dichloromethane (440 μL, 0.044 mmol) and pyridine (56.6 μL, 0.70 mmol), shaken for 4 hours at ambient temperature, treated with a solution of 4-fluorobenzenesulfonyl chloride (0.042 g, 0.24 mmol) in dimethylacetamide (1 mL), shaken for 16 hours at ambient temperature, and concentrated. The concentrate was acidified to pH 1.0 with 5% aqueous HCl and extracted with dichloromethane. The extracts were washed sequentially with water and brine, dried (MgSO4); filtered, and concentrated. The concentrate was purified by C18 reverse-phase HPLC using acetonitrile/water/0.1% TFA to provide the desired product. MS (ESI(+)) m/e 367 (M+NH4)+, 372 (M+Na)+; MS (ESI(−)) m/e 348 (M−H)−; 1H NMR (300 MHz, DMSO-d6) δ 9.62 (s, 1H), 7.77 (dd, 2H), 7.40 (t, 2H), 7.00 (d, 1H), 6.65 (d, 1H), 2.65 (m, 4H), 1.67 (m, 4H).

Provenance & Evidence