2-Chloroethanol → HCID 11673597、化合物

反応式

[OH:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[O:17][C:12]3=[N:13][CH:14]=[CH:15][CH:16]=[C:11]3[C:10](=[O:18])[CH:9]=2)=[CH:4][CH:3]=1.Cl[CH2:20][CH2:21][OH:22]>CCO.C(#N)C>[OH:22][CH2:21][CH2:20][O:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]2[O:17][C:12]3=[N:13][CH:14]=[CH:15][CH:16]=[C:11]3[C:10](=[O:18])[CH:9]=2)=[CH:6][CH:7]=1

参加物

実験手順

In a 100 mL dry round bottom flask with reflux condenser and magnetic stirrer was placed 2-(4-hydroxy-phenyl)-pyrano[2,3-b]pyridin-4-one (1.0 g, 4.18 mmol) in EtOH (10 mL) and acetonitrile (50 mL). 2-Chloroethanol (2.05 g, 25.0 mmol) was added slowly and the reaction mixture was refluxed for 48 h. The reaction mixture was cooled to rt and concentrated under reduced pressure. The crude product was purified by column chromatography, using 2% MeOH in dichloromethane to afford 2-(4-(2-hydroxyethoxy)phenyl)-4H-pyrano[2,3-b]pyridine-4-one (380 mg, 32% yield). MS (ES) m/z: 284.94 (M+1), 283.95 (M); Mp. 157-159° C.