Acetic acid, 2-(triphenylphosphoranylidene)-, methyl ester → methyl(E)-3-(3-benzyloxy-4-iodophenyl)acrylate
反応式
C1(P(=[CH:20][C:21]([O:23][CH3:24])=[O:22])(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[CH2:25]([O:32][C:33]1[CH:34]=[C:35]([CH:38]=[CH:39][C:40]=1[I:41])[CH:36]=O)[C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1>C1(C)C=CC=CC=1>[CH2:25]([O:32][C:33]1[CH:34]=[C:35](/[CH:36]=[CH:20]/[C:21]([O:23][CH3:24])=[O:22])[CH:38]=[CH:39][C:40]=1[I:41])[C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1参加物
4
反応条件
- 温度
- 90 °C
実験手順
5.0 g (14.95 mmol, 1.5 eq) of methyl (triphenylphosphoranylidene)acetate are added to a solution of 3.25 g (9.6 mmol, 1 eq) of 3-benzyloxy-4-iodobenzaldehyde in 15 ml of toluene. The reaction mixture is heated at 90° C. for 1 hour. The solvent is evaporated off and the oil obtained is chromatographed on silica gel (8/2 heptane/ethyl acetate). After recrystallization from dichloromethane/heptane, 2.59 g of methyl (E)-3-(3-benzyloxy-4-iodophenyl)acrylate are obtained. Yield=68%