Ethanol → Methyl 9-methylfluorene-9-carboxylate

HRID 1006429노트

반응식

HRID 1006429 반응식
[Na].[CH2:2]([OH:4])[CH3:3].[CH:5]1[C:17]2C(C(O)=O)[C:15]3[C:10](=[CH:11][CH:12]=[CH:13][CH:14]=3)[C:9]=2[CH:8]=[CH:7][CH:6]=1.[CH3:21]I.[CH2:23]([O:25]CC)C>O>[CH3:21][C:3]1([C:2]([O:25][CH3:23])=[O:4])[C:8]2[CH:7]=[CH:6][CH:5]=[CH:17][C:9]=2[C:10]2[C:15]1=[CH:14][CH:13]=[CH:12][CH:11]=2

참가 물질

7

반응물 5

HCID 702EthanolHCID 3283Diethyl EtherHCID 6328Methyl iodideHCID 748099-CarboxyfluoreneHCID 5360545Sodium

생성물 1

HCID 14934655Methyl 9-methylfluorene-9-carboxylate

시약·촉매·용매 1

HCID 962Water용매

실험 절차

From 7.6 g (0.33 mol) of sodium and 300 mL of ethanol, a sodium ethoxide solution is prepared, to which 69.6 g (0.33 mol) of 9-fluorenecarboxylic acid are added batchwise. After the addition has ended, the mixture is stirred for 2.5 hours at ambient temperature. Then it is evaporated to dryness, the residue is suspended in 600 mL of dimethylformamide, and 93.96 g (0.662 mol) of methyl iodide are added dropwise. The mixture is stirred for 3 hours at constant temperature. The cloudy solution is stirred into 500 mL of water and 300 mL of diethyl ether with cooling and extracted, the organic phase is washed with water and 10% sodium carbonate solution, dried, and evaporated to dryness. The residue is purified by column chromatography, eluent: cyclohexane-ethyl acetate (96:4). Yield: 12.61 g of white crystals (16% of theoretical yield); melting point: 108° C.-109° C.

후처리

  1. additionare added batchwise
  2. additionAfter the addition
  3. customThen it is evaporated to dryness
  4. stirringThe mixture is stirred for 3 hours at constant temperature
  5. temperaturewith cooling
  6. extractionextracted
  7. washthe organic phase is washed with water and 10% sodium carbonate solution
  8. customdried
  9. customevaporated to dryness
  10. customThe residue is purified by column chromatography, eluent

출처 및 근거

ORD 기록
ord-c32e05ae77d54f92b42b0f315647061d
출처 데이터셋
uspto-grants-2004_09
특허 번호
US06790856B2

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