反应详情

温度

0 °C

To a stirred solution of (R)-(1-(2-(6-bromopyridin-2-yl)-1H-imidazo[4,5-b]pyridin-5-yl)piperidin-3-yl)(pyrrolidin-1-yl)methanone (300 mg, 0.658 mmol) in toluene was added cyclopropane carbonitrile. The mixture was cooled to 0° C. then a 1M solution of sodium bis(trimethylsilyl)amide in THF was added dropwise. The reaction mixture was stirred for 16 h at room temperature. The mixture was quenched with water and then was extracted with ethyl acetate. The organic layer was dried over sodium sulfate and was concentrated under reduced pressure. The residue was purified via preparative TLC (twice) to afford (R)-1-(6-(5-(3-(pyrrolidine-1-carbonyl)piperidin-1-yl)-1H-imidazo[4,5-b]pyridin-2-yl)pyridin-2-yl)cyclopropanecarbonitrile (20 mg, 7%) MS (ES+APCI) (M+H) 442.2; LCMS retention time 2.969 min (Method C1); 1H NMR (400 MHz, CDCl3) δ 1.24-1.31 (m, 4H), 1.65-1.71 (m, 2H), 1.78-2.04 (m, 6H), 2.69 (m, 1H), 3.01 (t, 1H), 3.07-3.18 (m, 1H), 3.43-3.56 (m, 3H), 3.60-3.72 (m, 1H), 4.35 (br s, 1H), 4.54 (d, 1H), 6.72 (d, 1H), 7.48 (d, 1H), 7.79-7.95 (m, 2H), 8.58 (d, 1H), 10.28 (br s, 1H).

1. customThe mixture was quenched with water
2. extractionwas extracted with ethyl acetate
3. dry with materialThe organic layer was dried over sodium sulfate
4. concentrationwas concentrated under reduced pressure
5. customThe residue was purified via preparative TLC (twice)