Sodium Hydroxide → Benzoic acid, 3-[(1S)-2-methoxy-1-methylethoxy]-5-(phenylmethoxy)-

HRID 1175848Notes

Reaction equation

HRID 1175848 reaction equation
[CH3:1][O:2][CH2:3][C@@H:4]([O:6][C:7]1[CH:8]=[C:9]([CH:14]=[C:15]([O:17][CH2:18][C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)[CH:16]=1)[C:10]([O:12]C)=[O:11])[CH3:5].[OH-].[Na+]>C1COCC1.CO.O>[CH3:1][O:2][CH2:3][C@@H:4]([O:6][C:7]1[CH:8]=[C:9]([CH:14]=[C:15]([O:17][CH2:18][C:19]2[CH:20]=[CH:21][CH:22]=[CH:23][CH:24]=2)[CH:16]=1)[C:10]([OH:12])=[O:11])[CH3:5]

Participants

6

Reactant 2

HCID 14798Sodium HydroxideHCID 59127167Methyl 3-(benzyloxy)-5-[(1S)-2-methoxy-1-methylethoxy]benzoate

Product 1

HCID 59127150Benzoic acid, 3-[(1S)-2-methoxy-1-methylethoxy]-5-(phenylmethoxy)-Yield 99%

Reagents, catalysts & solvents 3

HCID 887MethanolSolventHCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

A solution of methyl 3-[(1S)-2-methoxy-(1-methylethyl)oxy]-5-{[phenylmethyl]oxy}benzoate (77.4 mmol) in a mixture of THF (232 mL) and methanol (232 mL) was treated with a solution of 2M sodium hydroxide (232 mmol), and the reaction mixture stirred for 4 hours at ambient temperature. The resulting solution was diluted with water (250 mL) and most of the organic solvent removed in vacuo. The resulting suspension was washed with diethyl ether (3×200 mL) and the organic washings discarded. The resulting aqueous solution was acidified to pH4 with 2M hydrochloric acid solution and extracted with ethyl acetate (2×200 mL). The extracts were combined, washed with brine, dried (MgSO4), and evaporated to give the desired compound (99% yield).

Workup

  1. customremoved in vacuo
  2. washThe resulting suspension was washed with diethyl ether (3×200 mL)
  3. extractionextracted with ethyl acetate (2×200 mL)
  4. washwashed with brine
  5. dry with materialdried (MgSO4)
  6. customevaporated

Sources & evidence

ORD record
ord-62bd65cfc4a44939b4123aa856036e59
Source dataset
uspto-grants-2010_11
Patent number
US07842694B2

Reaction notes

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