Sodium Hydroxide → HCID 22633432, compound

HRID 2417082Notes

Reaction equation

HRID 2417082 reaction equation
C([O:3][C:4](=[O:40])[C:5]([O:8][C:9]1[CH:14]=[CH:13][C:12]([O:15][CH2:16][CH2:17][C:18]2[N:19]=[C:20]([C:24]3[CH:29]=[CH:28][C:27]([C:30]4[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=4)=[CH:26][CH:25]=3)[O:21][C:22]=2[CH3:23])=[C:11]([CH2:36][CH2:37][CH2:38][CH3:39])[CH:10]=1)([CH3:7])[CH3:6])C.[OH-].[Na+]>C(O)C>[C:27]1([C:30]2[CH:31]=[CH:32][CH:33]=[CH:34][CH:35]=2)[CH:26]=[CH:25][C:24]([C:20]2[O:21][C:22]([CH3:23])=[C:18]([CH2:17][CH2:16][O:15][C:12]3[CH:13]=[CH:14][C:9]([O:8][C:5]([CH3:6])([CH3:7])[C:4]([OH:40])=[O:3])=[CH:10][C:11]=3[CH2:36][CH2:37][CH2:38][CH3:39])[N:19]=2)=[CH:29][CH:28]=1

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 69869842HCID 69869842, compound

Product 1

HCID 22633432HCID 22633432, compound

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Conditions

Temperature
55 °C

Procedure

A solution of 2-{4-[2-(2-biphenyl-4-yl-5-methyloxazol-4-yl)ethoxy]-3-butylphenoxy}-2-methylpropionic acid ethyl ester (0.57 mmol) in ethanol (10 mL) was treated with 2.5 N aqueous NaOH (1.1 mL), and heated at 55° C. for 2 h. The reaction was cooled to ambient temperature and concentrated down to near dryness. The residue was then diluted with ethyl acetate (40 mL) and water (20 mL) and acidified to pH=1 with 1N aqueous HCl. The organic layer was washed with brine (20 mL), dried (Na2SO4) and concentrated in vacuo to give 2-{4-[2-(2-biphenyl-4-yl-5-methyloxazol-4-yl)ethoxy]-3-butylphenoxy}-2-methylpropionic acid. 1H NMR (400 MHz, CDCl3) δ 8.04 (d, J=8.3 Hz, 2H), 7.68-7.62 (m, 4H), 7.46 (t, J=6.6 Hz, 2H), 7.38 (t, J=7.3 Hz, 1H), 6.74 (s, 3H), 4.21 (t, J=6.1 Hz, 2H), 3.01 (t, J=6.4 Hz, 2H), 2.40 (s, 3H), 1.52-1.43 (m, 8H), 1.32-1.24 (m, 2H), 0.87 (t, J=7.3 Hz, 3H); MS (ES) m/e 514 (M+1).

Workup

  1. temperatureThe reaction was cooled to ambient temperature
  2. concentrationconcentrated down to near dryness
  3. additionThe residue was then diluted with ethyl acetate (40 mL) and water (20 mL)
  4. washThe organic layer was washed with brine (20 mL)
  5. dry with materialdried (Na2SO4)
  6. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-4a3d7f7dffd14101bd158f44371a8bf6
Source dataset
uspto-grants-2004_11
Patent number
US06825222B2

Reaction notes

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