3,4-Dimethoxystyrene → 4-Ethyl-1,2-dimethoxybenzene

HRID 1029695

反応式

HRID 1029695 の反応式
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:8]=[CH:9][C:10]=1[O:11][CH3:12])[CH:6]=[CH2:7].[H][H]>[Pd].CO>[CH2:6]([C:5]1[CH:4]=[C:3]([O:2][CH3:1])[C:10]([O:11][CH3:12])=[CH:9][CH:8]=1)[CH3:7]

参加物

5

反応物 2

HCID 614003,4-DimethoxystyreneHCID 178418361HCID 178418361、化合物

生成物 1

HCID 799904-Ethyl-1,2-dimethoxybenzene収率 98.8%

試薬・触媒・溶媒 2

HCID 23938Palladium触媒HCID 887Methanol溶媒

実験手順

In an atmospheric pressure hydrogenation equipment 10.0 g (60.9 mM) of 3,4-dimethoxystyrene, 0.5 g of palladium charcoal and 200 ml of methanol were charged and introduced with hydrogen. The reaction was continued until the absorption of hydrogen was terminated. Palladium charcoal was filtered off from the reaction mixture. Methanol was distilled off from the filtrate. The residue was distilled under vacuum to obtain 10.0 g (60.2 mM) of 4-ethylveratrole as a colorless transparent liquid having a boiling point of 84°-85° C./2 mmHg

後処理

  1. customThe reaction was continued until the absorption of hydrogen
  2. customwas terminated
  3. filtrationPalladium charcoal was filtered off from the reaction mixture
  4. distillationMethanol was distilled off from the filtrate
  5. distillationThe residue was distilled under vacuum

出典と根拠

ORDレコード
ord-0b4020e1c0e34382bf467e544ef2337e
出典データセット
uspto-grants-1992_04
特許番号
US05102906

関連ノート

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