Lithium Hydroxide → 3-Cyclopentyl-2-(4-pyridin-3-yl-phenyl)-propionic acid

HRID 1935206노트

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HRID 1935206 반응식
C[O:2][C:3](=[O:23])[CH:4]([C:11]1[CH:16]=[CH:15][C:14]([C:17]2[CH:18]=[N:19][CH:20]=[CH:21][CH:22]=2)=[CH:13][CH:12]=1)[CH2:5][CH:6]1[CH2:10][CH2:9][CH2:8][CH2:7]1.[OH-].[Li+]>O1CCCC1>[CH:6]1([CH2:5][CH:4]([C:11]2[CH:12]=[CH:13][C:14]([C:17]3[CH:18]=[N:19][CH:20]=[CH:21][CH:22]=3)=[CH:15][CH:16]=2)[C:3]([OH:23])=[O:2])[CH2:10][CH2:9][CH2:8][CH2:7]1

참가 물질

4

반응물 2

HCID 3939Lithium HydroxideHCID 674834933-Cyclopentyl-2-(4-pyridin-3-yl-phenyl)-propionic acid methyl ester

생성물 1

HCID 224679003-Cyclopentyl-2-(4-pyridin-3-yl-phenyl)-propionic acid수율 63.3%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

반응 조건

온도
25 °C

실험 절차

A solution of 3-cyclopentyl-2-(4-pyridin-3-yl-phenyl)-propionic acid methyl ester (450 mg, 1.45 mmol) in tetrahydrofuran (5 mL) was treated with a 0.8M aqueous lithium hydroxide solution (2.18 mL, 1.74 mmol). The resulting reaction mixture was stirred at 25° C. for 3 d. The reaction mixture was then partitioned between water (50 mL) and ethyl acetate (50 mL), and the layers were separated. The aqueous layer was further extracted with ethyl acetate (2×50 mL). The combined organic extracts were dried over magnesium sulfate, filtered, and concentrated in vacuo. The resulting solid was purified by precipitation from methylene chloride/ethyl acetate to afford 3-cyclopentyl-2-(4-pyridin-3-yl-phenyl)-propionic acid (271 mg, 63%) as a white solid: mp 136-138° C.; EI-HRMS m/e calcd for C19H21NO2 (M+) 295.1572, found 295.1572.

후처리

  1. customThe resulting reaction mixture
  2. customThe reaction mixture was then partitioned between water (50 mL) and ethyl acetate (50 mL)
  3. customthe layers were separated
  4. extractionThe aqueous layer was further extracted with ethyl acetate (2×50 mL)
  5. dry with materialThe combined organic extracts were dried over magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe resulting solid was purified by precipitation from methylene chloride/ethyl acetate

출처 및 근거

ORD 기록
ord-eb328bd7fcde41d288e7dbf20e7dff55
출처 데이터셋
uspto-grants-2002_05
특허 번호
US06384220B2

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