Ethanol → Methyl 3-(4-{[4-(hydroxymethyl)phenoxy]methyl}-5-methyl-1,3-oxazol-2-yl)benzoate

HRID 2221585Notes

Reaction equation

HRID 2221585 reaction equation
[CH:1]([C:3]1[CH:26]=[CH:25][C:6]([O:7][CH2:8][C:9]2[N:10]=[C:11]([C:15]3[CH:16]=[C:17]([CH:22]=[CH:23][CH:24]=3)[C:18]([O:20][CH3:21])=[O:19])[O:12][C:13]=2[CH3:14])=[CH:5][CH:4]=1)=[O:2].C(O)C.[BH4-].[Na+].O>O1CCCC1>[OH:2][CH2:1][C:3]1[CH:4]=[CH:5][C:6]([O:7][CH2:8][C:9]2[N:10]=[C:11]([C:15]3[CH:16]=[C:17]([CH:22]=[CH:23][CH:24]=3)[C:18]([O:20][CH3:21])=[O:19])[O:12][C:13]=2[CH3:14])=[CH:25][CH:26]=1

Participants

6

Reactant 4

HCID 702EthanolHCID 962WaterHCID 4311764Sodium borohydrideHCID 86605721Methyl 3-{4-[(4-formylphenoxy)methyl]-5-methyl-1,3-oxazol-2-yl}benzoate

Product 1

HCID 23076400Methyl 3-(4-{[4-(hydroxymethyl)phenoxy]methyl}-5-methyl-1,3-oxazol-2-yl)benzoateYield 91%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of methyl 3-{4-[(4-formylphenoxy)methyl]-5-methyl-1,3-oxazol-2-yl}benzoate (2.12 g) in tetrahydrofuran (30 mL)-ethanol (5 mL) was gradually added sodium borohydride (0.23 g) at room temperature. After stirring the reaction mixture at room temperature for 1 hr, water was added, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated to give methyl 3-(4-{[4-(hydroxymethyl)phenoxy]methyl}-5-methyl-1,3-oxazol-2-yl)benzoate as colorless crystals (1.93 g, yield 91%). Recrystallization from ethyl acetate-hexane gave colorless prism crystals. melting point: 105-106° C.

Workup

  1. customat room temperature
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe organic layer was washed with saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-af806c8bea394b558340f8c193c6cd2e
Source dataset
uspto-grants-2008_05
Patent number
US07368578B2

Reaction notes

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