Sodium Hydroxide → 3-(Benzyloxy)-5-{[(2S)-butan-2-yl]oxy}benzoic acid

HRID 1990160Notes

Reaction equation

HRID 1990160 reaction equation
[CH3:1][C@H:2]([O:5][C:6]1[CH:7]=[C:8]([CH:13]=[C:14]([O:16][CH2:17][C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)[CH:15]=1)[C:9]([O:11]C)=[O:10])[CH2:3][CH3:4].[OH-].[Na+]>C1COCC1>[CH3:1][C@H:2]([O:5][C:6]1[CH:7]=[C:8]([CH:13]=[C:14]([O:16][CH2:17][C:18]2[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=2)[CH:15]=1)[C:9]([OH:11])=[O:10])[CH2:3][CH3:4]

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 59127096Methyl 3-{[(1S)-1-methylpropyl]oxy}-5-[(phenylmethyl)oxy]benzoate

Product 1

HCID 591271863-(Benzyloxy)-5-{[(2S)-butan-2-yl]oxy}benzoic acidYield 80.8%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

Methyl 3-{[(1S)-1-methylpropyl]oxy}-5-[(phenylmethyl)oxy]benzoate (14.87 g, 47.36 mmol) was vigorously stirred in a mixture of aqueous 1M sodium hydroxide (120 mL) and THF at approximately 45° C. for 4 hours. The bulk of the THF was removed under reduced pressure and the resultant solution partitioned between water and diethyl ether. The aqueous phase was acidified with 2M hydrochloric acid and then extracted with ethyl acetate. The organics were dried (MgSO4) and concentrated in vacuo gave a white solid (11.5 g). 1H NMR δ (CDCl3): 0.90 (t, 3H), 1.20 (d, 3H), 1.49-1.69 (m, 2H), 4.33-4.46 (m, 1H), 5.12 (s, 2H), 6.75-6.79 (m, 1H), 6.99-7.03 (m, 1H), 7.06-7.11 (m, 1H), 7.26-7.47 (m, 5H)

Workup

  1. customThe bulk of the THF was removed under reduced pressure
  2. customthe resultant solution partitioned between water and diethyl ether
  3. extractionextracted with ethyl acetate
  4. dry with materialThe organics were dried (MgSO4)
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-8102280d4d4a45ee84435f8ef826c19a
Source dataset
uspto-grants-2010_01
Patent number
US07642259B2

Reaction notes

Loading…