Pyridine → 3-Bromoquinolin-6-yl acetate

反応式

[N:1]1[C:10]2[C:5](=[CH:6][C:7]([O:11][C:12](=[O:14])[CH3:13])=[CH:8][CH:9]=2)[CH:4]=[CH:3][CH:2]=1.N1C=CC=CC=1.[Br:21]Br>C(Cl)(Cl)(Cl)Cl>[Br:21][C:3]1[CH:2]=[N:1][C:10]2[C:5]([CH:4]=1)=[CH:6][C:7]([O:11][C:12](=[O:14])[CH3:13])=[CH:8][CH:9]=2

参加物

実験手順

To a mixture of acetic acid quinolin-6-yl ester (120 g, 0.642 mol) and pyridine (114 mL, 1.41 mol) in 6 L of CCl4 was added Br2 (66 mL, 1.28 mol) dropwise. The mixture was heated to reflux for 2 hours before being cooled to room temperature. The liquid in the flask was decanted and washed with saturated aqueous NaHCO3 and water. The dark solid on the bottom of the flask was partitioned between aqueous NaHCO3 and dichloromethane. The combined organic layers were washed with water again and dried before being evaporated to dryness in vacuo. The crude product was purified through flash column chromatography eluting with Petroleum Ether/ethyl acetate (10/1˜1/1) to provide 108 g of acetic acid 3-bromo-quinolin-6-yl ester as a yellow solid (63% yield).