Water → methyl 2-(1-(4-chlorobenzoyl)-5-methoxy-1H-indol-3-yl)acetate

関与物質

反応手順

Methyl 2-(5-methoxy-1H-indol-3-yl)acetate (60 mg, 0.27 mmol) and NaH (8 mg, 0.33 mmol) were stirred in anhydrous DMF (1 mL) at 0° C. under argon for 30 min, at which time 4-chlorobenzoyl chloride (57 mg, 0.33 mmol) was added. The reaction mixture was stirred overnight at room temperature and was then poured into cold water (2 mL). The organic compound was immediately extracted with dichloromethane (2×2 mL), dried over Na2SO4, filtered, and concentrated in vacuo. The residue was purified on silica (ethyl acetate/hexane gradient) and recrystallized from hexane. Yield: 18 mg (18%). C19H16ClNO4, Mr=357.79; 1H NMR (400 MHz, DMSO-d6) d: 3.61 (s, 3H), 3.78 (s, 2H), 3.81 (s, 3H), 7.00 (dd, J=2.4/9.0 Hz, 1H), 7.12 (d, J=2.4 Hz, 1H), 7.35 (s, 1H), 7.65-7.77 (m, 4H), 8.17 (d, J=8.8 Hz, 1H); LCMS (ESI) tR: 2.81 min (>99%, ELSD), m/z: 358.0 [M+1]+.

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