Sodium hydride → N-(4-methyl-3-(3-methyl-1,2,4-oxadiazol-5-yl)thiophen-2-yl)-2-(naphthalen-1-yl)acetamide

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Reaction Steps

Sodium hydride (60% dispersion in mineral oil, 106 mg, 2.65 mmol) was added to a solution of acetamide oxime (218 mg, 2.94 mmol) in dry THF (5 mL) at rt. Methyl 4-methyl-2-(2-(naphthalen-1-yl)acetamido)thiophene-3-carboxylate (Aldrich, 500 mg, 1.47 mmol) was added, and the reaction mixture was allowed to stir over 3 days. The mixture was concentrated under reduced pressure, then partitioned between ethyl acetate and water. The organic layer was separated, and washed with saturated NaCl solution. The organic layer was dried (MgSO4), filtered and concentrated. The residue was purified by flash chromatography (EtOAc/hexanes elution), and then triturated from acetonitrile to afford the desired product (58 mg) as a white solid. Method [7]: rt=9.42 min; 1H NMR (CDCl3) δ11.3 (s, 1H), 8.02-7.89 (m, 3H), 7.63-7.50 (m, 4H), 6.48 (s, 1H), 4.35 (s, 2H), 2.42 (s, 3H), 2.08 (s, 3H); 13C NMR (CDCl3) δ172.1, 168.9, 165.2, 146.4, 134.0, 133.4, 132.4, 129.4, 129.1, 129.0, 128.8, 127.2, 126.4, 125.7, 123.7, 114.0, 106.9, 42.1, 16.9, 11.4; MH+ 364.1.

Provenance & Evidence