反应详情

To the mixture of 2-(3-benzoylphenyl) propionic acid (3.00 g, 11.8 mmol), 1,1-dimethylamino-2-hydroxyguanidine hydrochloride (1.98 g, 14.2 mmol), N-hydroxybenztriazole (1.91 g, 14.2 mmol) and dicyclohexylcarbodiimide (2.92 g, 14.2 mmol) in N,N-dimethylformamide (100 ml) were added triethylamine (1.43 g, 14.2 mmol). After the addition, the mixture was stirred at room temperature for 12 hr, then filterated. The filtrates were evaporated under reduced pressure to a residue, which wash chlomatographed to afford 3-dimethylamino-5-(1-(3-benzoylphenyl)ethyl)-1,2,4-oxadiazole (2.00 g, 53% yield); NMR(CDCl3)δ1.27(d, 3H), 3.00(s, 6H), 4.32(q, 1H), 7.30-7.99(m, 9H) ppm; IR(neat) 1660, 1595, 1400, 1280 cm-1.

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