4-Benzylphenol → (S)-2-(4-Benzyl-phenoxymethyl)-pyrrolidine-1-carboxylic acid tert-butyl ester

HRID 749930노트

반응식

HRID 749930 반응식
[CH:1]1[CH:2]=[CH:3][C:4]([CH2:7][C:8]2[CH:9]=[CH:10][C:11]([OH:14])=[CH:12][CH:13]=2)=[CH:5][CH:6]=1.[H-].[Na+].[C:17]([O:21][C:22]([N:24]1[CH2:28][CH2:27][CH2:26][C@H:25]1[CH2:29]OS(C1C=CC(C)=CC=1)(=O)=O)=[O:23])([CH3:20])([CH3:19])[CH3:18]>CN(C=O)C>[C:17]([O:21][C:22]([N:24]1[CH2:28][CH2:27][CH2:26][C@H:25]1[CH2:29][O:14][C:11]1[CH:10]=[CH:9][C:8]([CH2:7][C:4]2[CH:3]=[CH:2][CH:1]=[CH:6][CH:5]=2)=[CH:13][CH:12]=1)=[O:23])([CH3:20])([CH3:18])[CH3:19]

참가 물질

5

반응물 3

HCID 75634-BenzylphenolHCID 24758Sodium hydrideHCID 11783214tert-Butyl (2S)-2-(((4-methylbenzene-1-sulfonyl)oxy)methyl)pyrrolidine-1-carboxylate

생성물 1

HCID 44819340(S)-2-(4-Benzyl-phenoxymethyl)-pyrrolidine-1-carboxylic acid tert-butyl ester수율 117.2%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매2회

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온도
60 °C

실험 절차

To a solution of 4-hydroxydiphenylmethane (0.77 g, 4.18 mmol) in anhydrous DMF (22.5 mL) at 0° C. was added a 60% dispersion of NaH in mineral oil (0.23 g, 5.75 mmol) portionwise over 5 min. The resulting slurry was stirred at 0° C. for 45 minutes before a solution of tosylate from step 1 (1.50 g, 4.22 mmol) in DMF (11 mL) was added dropwise over 5 min. The subsequent mixture was stirred at 60° C. overnight. The reaction mixture was poured over ice and then concentrated under reduced pressure. The crude residue was extracted into ethyl acetate and sequentially washed with water, saturated aq. NaHCO3, water and brine. The combined organic layer was dried anhydrous Na2SO4, filtered and concentrated in vacuo to afford the title compound (1.8 g, >100%) as a tan oil;

후처리

  1. additionwas added dropwise over 5 min
  2. additionThe reaction mixture was poured over ice
  3. concentrationconcentrated under reduced pressure
  4. extractionThe crude residue was extracted into ethyl acetate
  5. washsequentially washed with water, saturated aq. NaHCO3, water and brine
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo

출처 및 근거

ORD 기록
ord-015ec1289363454b997671bb4c8d9def
출처 데이터셋
uspto-grants-2008_07
특허 번호
US07402684B2

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