Ethyl 3-(2,4-difluorophenyl)prop-2-enoate → Ethyl 3-(2,4-difluorophenyl)propanoate
反応式
[F:1][C:2]1[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=1[CH:9]=[CH:10][C:11]([O:13][CH2:14][CH3:15])=[O:12].[H][H]>C(O)C.[Ni]>[F:1][C:2]1[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=1[CH2:9][CH2:10][C:11]([O:13][CH2:14][CH3:15])=[O:12]参加物
5
実験手順
42.4 g (0.20 mol) of ethyl 3-(2,4-difluorophenyl)-2-propenoate are dissolved in 400 ml of ethanol, 4 g of Raney nickel in ethanol are added, and the mixture is hydrogenated at 20°-25° C. using hydrogen gas. When the theoretical amount of hydrogen has been taken up, the solution is filtered and evaporated on a vacuum rotary evaporator. 41.4 g of a pale brown oil which is subjected to fractional distillation at 120° C. in vacuo (20 mbar) are obtained. 33 g (77% of theory) of a colourless oil are obtained.
後処理
- customis hydrogenated at 20°-25° C.
- filtrationthe solution is filtered
- customevaporated on a vacuum rotary evaporator
- distillation41.4 g of a pale brown oil which is subjected to fractional distillation at 120° C. in vacuo (20 mbar)
- customare obtained
- custom33 g (77% of theory) of a colourless oil are obtained
出典と根拠
- ORDレコード
- ord-0b9eae936bac40c1b82f970399fd648b
- 出典データセット
- uspto-grants-1991_11
- 特許番号
- US05068371
反応ノート
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