Sodium Hydroxide → 3-(7-Acetylamino-1-oxo-1,3-dihydro-isoindol-2-yl)-3-(4-difluoromethoxy-3-ethoxy-phenyl)-propionic acid

HRID 1694261Notes

Reaction equation

HRID 1694261 reaction equation
C[O:2][C:3](=[O:33])[CH2:4][CH:5]([N:19]1[CH2:27][C:26]2[C:21](=[C:22]([NH:28][C:29](=[O:31])[CH3:30])[CH:23]=[CH:24][CH:25]=2)[C:20]1=[O:32])[C:6]1[CH:11]=[CH:10][C:9]([O:12][CH:13]([F:15])[F:14])=[C:8]([O:16][CH2:17][CH3:18])[CH:7]=1.[OH-].[Na+]>C1COCC1>[C:29]([NH:28][C:22]1[CH:23]=[CH:24][CH:25]=[C:26]2[C:21]=1[C:20](=[O:32])[N:19]([CH:5]([C:6]1[CH:11]=[CH:10][C:9]([O:12][CH:13]([F:14])[F:15])=[C:8]([O:16][CH2:17][CH3:18])[CH:7]=1)[CH2:4][C:3]([OH:33])=[O:2])[CH2:27]2)(=[O:31])[CH3:30]

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 102537893-(7-Acetylamino-1-oxo-1,3-dihydro-isoindol-2-yl)-3-(4-difluoromethoxy-3-ethoxy-phenyl)-propionic acid methyl ester

Product 1

HCID 104788263-(7-Acetylamino-1-oxo-1,3-dihydro-isoindol-2-yl)-3-(4-difluoromethoxy-3-ethoxy-phenyl)-propionic acidYield 96%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To the THF solution of 3-(7-acetylamino-1-oxo-1,3-dihydro-isoindol-2-yl)-3-(4-difluoromethoxy-3-ethoxy-phenyl)-propionic acid methyl ester (2.5 g, 5.4 mmol) was added dropwise 10N NaOH (1 ml, 10 mmol) and was stirred at room temperature overnight. The resulted suspension was filtered and the solid was dissolved in water (20 ml). The aqueous solution was acidified to pH=4 to obtain a milky suspension. The suspension was extracted with EtOAc (50 ml×3). The organic layer was washed with water (50 ml×2), brine (30 ml), dried over Na2SO4 and concentrated to give white solid (2.3 g, 96% yield): mp 105-107° C.; 1HNMR (CDCl3): δ 1.42 (J=7.5 Hz, 3H, OCH2CH3), 2.22 (s, 3H), 3.11 (dd, J=5, 12 Hz, 1H, CH2), 3.25 (dd, J=10, 15 Hz, 1H, CH2), 4.08 (q, J=7.5 Hz, 2H, OCH2CH3), 4.12 (d, J=17.5 Hz, 1H, CH2N), 4.38 (d, J=17.5 Hz, 1H, CH2N), 5.81 (m, 1H, CHN), 6.55 (t, JH-F=75 Hz, 1H, CF2H), 6.96 (m, 3H, Ar), 7.13 (d, J=7.5 Hz, 1H, Ar), 7.45 (m, 1H, Ar), 8.43 (d, J=7.5 Hz, 1H, Ar), 10.25 (s, 1H, NHCO). 13CNMR (CDCl3): δ14.6, 24.8, 36.7, 46.8, 51.7, 64.9, 111.8, 111.3, 115.9, 117.1, 117.3, 118.0, 118.9, 120.1, 122.8, 133.5, 136.7, 137.8, 140.1, 141.2, 150.9, 169.47, 169.49, 173.5: Anal. Calcd. for C22H22F2N2O6+0.22H2O: C, 58.41; H, 5.00; N, 6.19. Found: C, 58.06, H, 4.92, N, 5.90.

Workup

  1. filtrationThe resulted suspension was filtered
  2. dissolutionthe solid was dissolved in water (20 ml)
  3. customto obtain a milky suspension
  4. extractionThe suspension was extracted with EtOAc (50 ml×3)
  5. washThe organic layer was washed with water (50 ml×2), brine (30 ml)
  6. dry with materialdried over Na2SO4
  7. concentrationconcentrated

Sources & evidence

ORD record
ord-4c32a93bf444492295b7a55d81fb8d50
Source dataset
uspto-grants-2012_04
Patent number
US08158672B2

Reaction notes

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