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

HRID 703998

반응식

HRID 703998 반응식
[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]

참가 물질

5

반응물 2

HCID 614003,4-DimethoxystyreneHCID 178418361HCID 178418361, 화합물

생성물 1

HCID 799904-Ethyl-1,2-dimethoxybenzene수율 98.8%

시약·촉매·용매 2

HCID 23938Palladium촉매HCID 887Methanol용매

실험 절차

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

후처리

  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

출처 및 근거

ORD 기록
ord-ea32f6667a7c44ef88772b0e58eda50f
출처 데이터셋
uspto-grants-1991_01
특허 번호
US04985458

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