Ethanol → (Z)-4-[2-(3,5,5,8,8-Pentamethyl-5,6,7,8-tetrahydronaphthalen-2-yl)-2-(trimethylsilyl)vinyl]benzoic Acid

HRID 1281227노트

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HRID 1281227 반응식
[CH3:1][C:2]1[C:3](/[C:16](/[Si:29]([CH3:32])([CH3:31])[CH3:30])=[CH:17]/[C:18]2[CH:28]=[CH:27][C:21]([C:22]([O:24]CC)=[O:23])=[CH:20][CH:19]=2)=[CH:4][C:5]2[C:6]([CH3:15])([CH3:14])[CH2:7][CH2:8][C:9]([CH3:13])([CH3:12])[C:10]=2[CH:11]=1.C(O)C.[OH-].[K+]>O>[CH3:1][C:2]1[C:3](/[C:16](/[Si:29]([CH3:30])([CH3:32])[CH3:31])=[CH:17]/[C:18]2[CH:28]=[CH:27][C:21]([C:22]([OH:24])=[O:23])=[CH:20][CH:19]=2)=[CH:4][C:5]2[C:6]([CH3:15])([CH3:14])[CH2:7][CH2:8][C:9]([CH3:12])([CH3:13])[C:10]=2[CH:11]=1

참가 물질

5

반응물 3

HCID 702EthanolHCID 14797Potassium HydroxideHCID 9955320Ethyl(Z)-4-[2-(3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydronaphthalen-2-yl)-2-(trimethylsilyl)vinyl]benzoate2회

생성물 1

HCID 9910061(Z)-4-[2-(3,5,5,8,8-Pentamethyl-5,6,7,8-tetrahydronaphthalen-2-yl)-2-(trimethylsilyl)vinyl]benzoic Acid

시약·촉매·용매 1

HCID 962Water용매

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온도
50 °C

실험 절차

To a solution of ethyl (Z)-4-[2-(3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydronaphthalen-2-yl)-2-(trimethylsilyl)vinyl]benzoate (Compound 4, 0.034 g, 0.076 mmol) and 2 mL of ethyl alcohol was added aqueous 1 N KOH (0.5 mL). The resulting solution was heated in an 50° C. bath until the hydrolysis reaction was completed, as judged by thin layer chromatography. The solution was cooled to room temperature, diluted with water and washed once with 1:1 ether:hexane solution, and the layers were separated. The aqueous layer was acidified with 1 N aqueous HCl and the product extracted 3 times with ethyl acetate. The combined organic extracts were washed with brine, and dried over MgSO4, and filtered, and the solvents were removed in vacuo to give the title compound as a white solid.

후처리

  1. customuntil the hydrolysis reaction
  2. temperatureThe solution was cooled to room temperature
  3. washwashed once with 1:1 ether
  4. customhexane solution, and the layers were separated
  5. extractionthe product extracted 3 times with ethyl acetate
  6. washThe combined organic extracts were washed with brine
  7. dry with materialdried over MgSO4
  8. filtrationfiltered
  9. customthe solvents were removed in vacuo

출처 및 근거

ORD 기록
ord-ea6d8f96f8bb45d39f7381ce349bca33
출처 데이터셋
uspto-grants-2002_09
특허 번호
US06452032B1

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