Lithium hydroxide, monohydrate → ((1S)-5-{3-[4-(4-ethyl-1,3-thiazol-2-yl)-2-propylphenoxy]propoxy}-2,3-dihydro-1H-inden-1-yl)acetic acid

HRID 2235892Notes

Reaction equation

HRID 2235892 reaction equation
[CH2:1]([C:3]1[N:4]=[C:5]([C:8]2[CH:33]=[CH:32][C:11]([O:12][CH2:13][CH2:14][CH2:15][O:16][C:17]3[CH:18]=[C:19]4[C:23](=[CH:24][CH:25]=3)[C@H:22]([CH2:26][C:27]([O:29]CC)=[O:28])[CH2:21][CH2:20]4)=[C:10]([CH2:34][CH2:35][CH3:36])[CH:9]=2)[S:6][CH:7]=1)[CH3:2].O[Li].O>C1COCC1.O.CO>[CH2:1]([C:3]1[N:4]=[C:5]([C:8]2[CH:33]=[CH:32][C:11]([O:12][CH2:13][CH2:14][CH2:15][O:16][C:17]3[CH:18]=[C:19]4[C:23](=[CH:24][CH:25]=3)[C@H:22]([CH2:26][C:27]([OH:29])=[O:28])[CH2:21][CH2:20]4)=[C:10]([CH2:34][CH2:35][CH3:36])[CH:9]=2)[S:6][CH:7]=1)[CH3:2]

Participants

6

Reactant 2

HCID 168937Lithium hydroxide, monohydrateHCID 16110452ethyl ((1S)-5-{3-[4-(4-ethyl-1,3-thiazol-2-yl)-2-propylphenoxy]propoxy}-2,3-dihydro-1H-inden-1-yl)acetate

Product 1

HCID 16110486((1S)-5-{3-[4-(4-ethyl-1,3-thiazol-2-yl)-2-propylphenoxy]propoxy}-2,3-dihydro-1H-inden-1-yl)acetic acidYield 63%

Reagents, catalysts & solvents 3

HCID 887MethanolSolventHCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a solution of ethyl ((1S-5-{3-[4-(4-ethyl-1,3-thiazol-2-yl)2-propylphenoxy]propoxy}-2,3-dihydro-1H-inden-1-yl)acetate (60 mg 0.12 mmol) (Example 147) in THF (3.0 mL) was added a solution of LiOH.H2O (20 mg, 0.48 mmol) in water (1.0 mL) and MeOH (1.0 mL), and the mixture was stirred for 12 h at rt. The reaction mixture was concentrated under reduced pressure, and the residue was diluted with water and extracted with Et2O (3×). The aqueous phase was brought to pH 3 using HCl (1N aqueous solution), and then the aqueous layer was extracted with EtOAc. The organic phase was dried over MgSO4, filtered, and concentrated under reduced pressure to give 36 mg (63%) of the title compound as a white solid. 1H NMR (300 MHz, CD3OD): δ 0.96 (t, 3H), 1.34 (t, 3H), 1.59-1.71 (m, 2H), 1.73-1.81 (m, 1H), 2.25-2.38 (m, 2H), 2.39-2.47 (m, 2H), 2.62-2.98 (m, 7H), 3.44-3.57 (m, 1H), 4.20 (t, 2H), 4.26 (t, 2H), 6.75 (d, 1H), 6.84 (s, 1H), 7.02 (d, 1H), 7.07 (s, 1H), 7.14 (d, 1H), 7.71 (s, 1H), 7.78 (d, 1H); LC-MS: RT=4.04 min, (M+H)+ 480.2.

Workup

  1. concentrationThe reaction mixture was concentrated under reduced pressure
  2. additionthe residue was diluted with water
  3. extractionextracted with Et2O (3×)
  4. extractionthe aqueous layer was extracted with EtOAc
  5. dry with materialThe organic phase was dried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-27680896f6ce4635897c4a766cfa9dbe
Source dataset
uspto-grants-2010_05
Patent number
US07714004B2

Reaction notes

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