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Sodium Hydroxide → 2-{4-[2-(2-Biphenyl-4-yl-5-Methyloxazol-4-yl)-Ethoxy]-2-Cyclohexylmethyl-phenoxy}-2-Methyl-Propionic Acid

HRID 2417069
Notes
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Reaction equation

HRID 2417069 reaction equation
C([O:3][C:4](=[O:43])[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])=[CH:11][C:10]=1[CH2:36][CH:37]1[CH2:42][CH2:41][CH2:40][CH2:39][CH2:38]1)([CH3:7])[CH3:6])C.[OH-].[Na+]>C(O)C>[C:27]1([C:30]2[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=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]([CH3:7])([CH3:6])[C:4]([OH:43])=[O:3])=[C:10]([CH2:36][CH:37]4[CH2:38][CH2:39][CH2:40][CH2:41][CH2:42]4)[CH:11]=3)[N:19]=2)=[CH:29][CH:28]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 129668392-{4-[2-(2-Biphenyl-4-yl-5-methyloxazol-4-yl)-ethoxy]-2-cyclohexylmethyl-phenoxy}-2-methyl-propionic acid ethyl ester

Product 1

HCID 129668402-{4-[2-(2-Biphenyl-4-yl-5-Methyloxazol-4-yl)-Ethoxy]-2-Cyclohexylmethyl-phenoxy}-2-Methyl-Propionic Acid

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]-2-cyclohexylmethyl-phenoxy}-2-methyl-propionic acid ethyl ester (0.54 mmol) in ethanol (10 mL) was treated with 2.5 N aqueous NaOH (0.4 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]-2-cyclohexylmethyl-phenoxy}-2-methyl-propionic acid. 1H NMR (400 MHz, CDCl3) δ 8.03-8.05 (m, 2H), 7.67 (d, 2H, J=8.8 Hz) 7.62 (d, 2H, 6.8 Hz), 7.47-7.43 (m, 2H), 7.35-7.39 (m, 1H, J=8.8 Hz), 6.67 (d, 1H, J=29 Hz), 6.62 (dd, 1H, J=8.8 Hz, J=2.9 Hz), 4.18 (t, 2H, J=6.4 Hz), 3.00 (t, 2H, J=6.4 Hz), 2.40 (s, 3H), 1.62-1.66 (m, 5H), 1.53 (s, 6H), 1.25 (s, 2H), 1.13-1.18 (m, 4H), 0.85-0.97 (m, 2H), MS (ES) m/e 554.2 (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-77ad1686b4ec4c099237cf6fd6cbfccf
Source dataset
uspto-grants-2004_11
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US06825222B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes