5-Butyl-pyridine-2-carboxylic acid methoxy-methyl-amide → 1-(5-Butyl-pyridin-2-yl)-ethanone

참여 물질

반응 단계

MeMgBr (1.98 ml, 5.94 mmol) was added to a solution of 5-butyl-pyridine-2-carboxylic acid methoxy-methyl-amide (I-2A-38a; 880 mg, 3.96 mmol) in THF (10 ml) at 0° C. The reaction mixture was allowed to warm to room temperature and was stirred for 1.5 h, quenched with saturated aqueous NH4Cl (1 ml), and saturated aqueous NaCl. The aqueous THF solution was extracted with EtOAc (2×), and the combined organic extracts were washed with saturated aqueous NaCl, dried, and concentrated under vacuum to yield the product I-2A-38b as an oil (680 mg): APcl MS 178.1 (M+1)+; 1H NMR (400 MHz, CDCl3) δ 8.47 (d, 1H, J=1.6 Hz), 7.95 (d, 1H, J=8.3 Hz), 7.60 (dd, 1H, J=1.6, 8.3 Hz), 2.69 (s, 3H), 2.67 (t, 2H, J=7.9 Hz), 1.65-1.56 (m, 2H), 1.40-1.30 (m, 2H), 0.92 (t, 3H, J=7.4 Hz).

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