Pyridine → HCID 11669769, compound

Participants

Reaction Steps

A solution of Example 294 (0.0590 g, 0.17 mmol) in CH2Cl2 (3.0 mL) was treated with chloroacetyl chloride (16 μL, 0.20 mmol) and pyridine (69 μL, 0.85 mmol), stirred 4 hours at room temperature, then quenched with 1N HCl (10 mL). The layers were separated and the organic layer was washed with brine, dried (MgSO4), filtered, and concentrated to a residue (45.0 mg). The residue was dissolved in acetone (0.4 mL), treated with diethylamine (50 μL, 0.48 mmol), heated to 60° C. for 2 hours, cooled to room temperature, diluted with ethyl acetate (10 mL), and washed with 1N HCl (10 mL). The organic layer was 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 (8.7 mg, 18%). MS (ESI(+)) m/e 460 (M+H)+; MS (ESI(−)) m/e 458 (M−H)−; 1H NMR (300 MHz, DMSO-d6) δ 7.79 (m, 2H), 7.56 (m, 1H), 7.23 (m, 2H), 6.90 (m, 1H), 3.30 (m, 4H), 2.80 (m, 2H), 2.73 (s, 2H), 2.59 (m, 2H), 1.61 (m, 4H), 1.06 (m, 6H).

Provenance & Evidence