Pyridine → 4'-Amino-3'-chloro-5'-(2,4-difluorophenylthio)acetophenone

反応式

[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([C:8](=[O:10])[CH3:9])=[CH:4][C:3]=1[S:11][C:12]1[CH:17]=[CH:16][C:15]([F:18])=[CH:14][C:13]=1[F:19].N1C=CC=CC=1.[Cl-:26].[Cl-].IC1C=CC=CC=1>O1CCCC1>[NH2:1][C:2]1[C:3]([S:11][C:12]2[CH:17]=[CH:16][C:15]([F:18])=[CH:14][C:13]=2[F:19])=[CH:4][C:5]([C:8](=[O:10])[CH3:9])=[CH:6][C:7]=1[Cl:26]

参加物

実験手順

A mixture of 4'-amino-3'-(2,4-difluorophenylthio)acetophenone (2 g), pyridine (0.623 g) and iodobenzene dichloride (2.7 g) in tetrahydrofuran (20 ml) was stirred for 1.5 hours at 0° to 5° C. The mixture was concentrated to dryness. The residue was dissolved in ethyl acetate, washed with water and an aqueous solution of sodium hydrogensulfite successively, dried, and evaporated. The solid residue was washed with a mixture of hexane and ethanol to give 4'-amino-3'-chloro-5'-(2,4-difluorophenylthio)acetophenone (1.7 g).