Methyl Salicylate → Methyl 2-propoxybenzoate

反応式

[OH:1][C:2]1[CH:11]=[CH:10][CH:9]=[CH:8][C:3]=1[C:4]([O:6][CH3:7])=[O:5].C(=O)([O-])[O-].[K+].[K+].[CH2:18](I)[CH2:19][CH3:20]>CN(C)C=O>[CH2:18]([O:1][C:2]1[CH:11]=[CH:10][CH:9]=[CH:8][C:3]=1[C:4]([O:6][CH3:7])=[O:5])[CH2:19][CH3:20]

参加物

反応条件

温度: 0 °C

実験手順

To a solution of methyl 2-hydroxybenzoate (1.05 g) and potassium carbonate (1.43 g) in dimethylformamide (10 ml) was added propyl iodide (1.41 g) under ice-water cooling and the mixture was stirred at 0° C. for 2 hours. The mixture was partitioned between ethyl acetate and water. The organic layer was separated, washed with 1N sodium hydroxide solution, water and brine, dried over magnesium sulfate, and evaporated in vacuo. The residue was purified by silica gel column chromatography eluting with a mixture of hexane and ethyl acetate (20:1) to give methyl 2-(propyloxy)benzoate as colorless oil (853 mg).