Sulfuric Acid → Methyl 3-(4-chlorophenyl)-2-propenoate
反応式
[Cl:1][C:2]1[CH:12]=[CH:11][C:5]([CH:6]=[CH:7][C:8]([OH:10])=[O:9])=[CH:4][CH:3]=1.S(=O)(=O)(O)O.[C:18](=O)(O)[O-].[Na+]>CO>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([CH:6]=[CH:7][C:8]([O:10][CH3:18])=[O:9])=[CH:11][CH:12]=1参加物
5
実験手順
25.9 g of p-chlorocinnamic acid was dissolved in 250 ml of methanol, to the solution was added 1.5 ml of concentrated sulfuric acid, and the mixture was refluxed for 2 hours. The reaction mixture was poured on ice, and the mixture was alkalized with sodium bicarbonate and extracted twice with 1000 ml of chloroform. The extract was washed with a saturated sodium chloride aqueous solution, dried over magnesium sulfate and evaporated to remove the solvent under a reduced pressure, and resulting residue was applied to a silica gel column and eluted with hexane/ethyl acetate (10:1), to obtain 26.5 g of the methyl p-chlorocinnamate.