4-Nitrobenzoic Acid → 1-Phenylethanol, (S)-

HRID 551748ノート

反応式

HRID 551748 の反応式
[C:1]1([C@@H:7]([OH:9])[CH3:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[N+:29]([C:32]1[CH:40]=[CH:39][C:35]([C:36](O)=[O:37])=[CH:34][CH:33]=1)([O-:31])=[O:30].COCCOC(N=NC(OCCOC)=O)=O>C1COCC1.O>[N+:29]([C:32]1[CH:33]=[CH:34][C:35]([C:36]([O:9][C@@H:7]([C:1]2[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=2)[CH3:8])=[O:37])=[CH:39][CH:40]=1)([O-:31])=[O:30].[C:1]1([C@@H:7]([OH:9])[CH3:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

参加物

8

反応物 4

HCID 61084-Nitrobenzoic AcidHCID 11776TriphenylphosphineHCID 4431351-Phenylethanol, (S)-HCID 533844152-methoxyethyl N-(2-methoxyethoxycarbonylimino)carbamate

生成物 2

HCID 4431351-Phenylethanol, (S)-HCID 7657150HCID 7657150、化合物

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 8028Tetrahydrofuran溶媒2 回

実験手順

After (S)-1-phenylethyl alcohol (300 mg, 2.46 mmol), triphenylphosphine (771 mg, 2.95 mmol), 4-nitrobenzoic acid (494 mg, 2.95 mmol), and THF (12 ml) were added to a 50 ml flask, azodicarboxylic acid bis(2-methoxyethyl) ester (691 mg, 2.95 mmol) dissolved in THF (6 ml) was added dropwise thereto at 20° C., and the reaction was allowed to proceed for four hours. Water (0.5 mL) was added, and concentration was carried out. Then, water (10 ml) was added to the solution, and extraction was carried out using diethyl ether (10 ml, ×2). Then, the organic layer was washed with water (10 mL) and saturated salt water (10 ml), and dehumidified with anhydrous magnesium sulfate. Subsequently, a crude product obtained by concentration was purified by column chromatography (silica gel, 5% ethyl acetate-hexane solution) to give (R)-1-(4-nitrobenzoyloxy)-1-phenylethane as a pale yellow liquid substance (559 mg, yield: 84%/(S)-1-phenylethyl alcohol).

後処理

  1. additionwas added dropwise
  2. customat 20° C.
  3. concentrationconcentration
  4. additionThen, water (10 ml) was added to the solution, and extraction
  5. washThen, the organic layer was washed with water (10 mL) and saturated salt water (10 ml)
  6. customSubsequently, a crude product obtained by concentration
  7. customwas purified by column chromatography (silica gel, 5% ethyl acetate-hexane solution)

出典と根拠

ORDレコード
ord-91adf9a4a46d46c0859b39ea899b8a14
出典データセット
uspto-grants-2011_05
特許番号
US07947816B2

反応ノート

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