Lithium Hydroxide → HCID 67488047, 화합물

HRID 2371252노트

반응식

HRID 2371252 반응식
C[O:2][C:3](=[O:33])[CH:4]([C:23]1[CH:28]=[CH:27][C:26]([C:29]([CH3:32])([CH3:31])[CH3:30])=[CH:25][CH:24]=1)[CH2:5][C:6]1[CH:11]=[CH:10][C:9]([O:12][CH2:13][CH2:14][O:15][CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)=[CH:8][CH:7]=1.[OH-].[Li+]>C1COCC1.CO.O>[CH2:16]([O:15][CH2:14][CH2:13][O:12][C:9]1[CH:10]=[CH:11][C:6]([CH2:5][CH:4]([C:23]2[CH:24]=[CH:25][C:26]([C:29]([CH3:32])([CH3:31])[CH3:30])=[CH:27][CH:28]=2)[C:3]([OH:33])=[O:2])=[CH:7][CH:8]=1)[C:17]1[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=1

참가 물질

4

반응물 2

HCID 3939Lithium HydroxideHCID 67486802HCID 67486802, 화합물

생성물 1

HCID 67488047HCID 67488047, 화합물

시약·촉매·용매 1

HCID 21892291Methanol tetrahydrofuran water용매

실험 절차

To the crude 3-[4-(2-Benzyloxyethoxy)-phenyl]-2-(4-tert-butylphenyl)-propionic acid methyl ester from step d dissolved in 20 mL of THF/MeOH/H2O (3:1:1) was added lithium hydroxide (270 mg, 6.5 mmol) After stirring for 5 hrs at rt, the organic solvents were removed under vacuum and the reaction residue diluted further with water (25 mL). The aqueous mixture was extracted with diethyl ether, made acidic with 1 N HCl and extracted again with ethyl acetate. The ethyl acetate portion was then dried over Na2SO4 and concentrated under vacuum to afford 3-[4-(2-Benzyloxyethoxy)-phenyl]-2-(4-tert-butylphenyl)-propionic acid as a semi-solid mass. (456 mg, 81% over 2 steps)

후처리

  1. customthe organic solvents were removed under vacuum
  2. additionthe reaction residue diluted further with water (25 mL)
  3. extractionThe aqueous mixture was extracted with diethyl ether
  4. extractionextracted again with ethyl acetate
  5. dry with materialThe ethyl acetate portion was then dried over Na2SO4
  6. concentrationconcentrated under vacuum

출처 및 근거

ORD 기록
ord-d25f0be0f82844569003f5aa4942167c
출처 데이터셋
uspto-grants-2014_04
특허 번호
US08710236B2

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