反应详情

温度

120 °C

2-Pyridylzinc bromide (10 mL, 5 mmol, 0.5M in THF) was added to 4-bromoindan-1-one O-methyl-oxime (600 mg, 2.5 mmol) and Pd(PPh3)4 (58 mg, 0.05 mmol) under nitrogen atmosphere. The stirred solution was heated at 120° C. for 10 minutes on the microwave. After cooling to ambient temperature, the reaction mixture was filtered through celite, then silica gel with ethyl acetate. The filtrate was concentrated to a brown oil and chromatographed on silica gel with 20-40% ethyl acetate in hexane. Obtained 4-pyridin-2-ylindan-1-one O-methyloxime (326 mg, 55%) as a yellow oil. MS (DCI/NH3) m/z: 239.09 [M+H]+. 1H NMR (DMSO-d6) δ: 2.82 (m, 2H), 3.29 (m, 2H), 3.92 (s, 3H), 7.36 & 7.38 (pair of dd, 1H), 7.43 (t, 1H), 7.64 (dd, 1H), 7.74 (dd, 1H), 7.75 (dt, 1H), 7.91 (td, 1H), 8.68 & 8.69 (pair of dd, 1H).

1. temperatureAfter cooling to ambient temperature
2. filtrationthe reaction mixture was filtered through celite
3. concentrationThe filtrate was concentrated to a brown oil
4. customchromatographed on silica gel with 20-40% ethyl acetate in hexane