1,2-Dichloroethane → N-[(1R)-1-(5-bromopyridin-2-yl)ethyl]-2-[4-(5-methylisoxazol-4-yl)phenyl]acetamide

関与物質

反応手順

To a solution of 0.20 g (0.921 mmol) [4-(5-methylisoxazol-4-yl)phenyl]acetic acid in 2.00 ml DMF was added 0.22 g (0.92 mmol) (1R)-1-(5-bromopyridin-2-yl)ethanamine hydrochloride salt, 0.16 g (1.20 mmol) HOAT, 0.23 g (1.20 mmol) EDC, and 0.48 mL (2.76 mmol) DIEA. After 1.5 h at room temperature, the reaction mixture was diluted with CH2Cl2, washed three times with water, and washed with brine. The organic layer was dried over NaSO4, filtered and concentrated in vacuo. Purification by flash chromatography (1×14 cm silica gel, linear gradient 38-85% EtOAc:hexane) afforded N-[(1R)-1-(5-bromopyridin-2-yl)ethyl]-2-[4-(5-methylisoxazol-4-yl)phenyl]acetamide. 1H NMR (CDCl3, 400 MHz) 8.53 (d, 1H, J=2.11 Hz); 8.35 (s, 1H); 7.76 (dd, 1H, J=2.38 Hz, 8.33 Hz); 7.35 (s, 4H); 7.13 (d, 1H, J=8.24 Hz); 6.73 (br d, 1H, J=6.32 Hz); 5.11 (m, 1H); 3.61 (s, 2H); 2.58 (s, 3H); 1.42 (d, 3H, J=6.87). Electrospray mass spec M+H=402.0.

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