Benzyl Alcohol → Methyl 3-[4-(benzyloxy)phenyl]propanoate

HRID 2422196Notes

Reaction equation

HRID 2422196 reaction equation
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][CH2:9][C:10]([O:12][CH3:13])=[O:11])=[CH:4][CH:3]=1.[CH2:14](O)[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OCC)=O)=NC(OCC)=O>O1CCCC1.O>[C:15]1([CH2:14][O:1][C:2]2[CH:3]=[CH:4][C:5]([CH2:8][CH2:9][C:10]([O:12][CH3:13])=[O:11])=[CH:6][CH:7]=2)[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1

Participants

7

Reactant 4

HCID 244Benzyl AlcoholHCID 11776TriphenylphosphineHCID 79706Benzenepropanoic acid, 4-hydroxy-, methyl esterHCID 220568ethyl N-ethoxycarbonyliminocarbamate

Product 1

HCID 525519Methyl 3-[4-(benzyloxy)phenyl]propanoateYield 59%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

To an ice-cooled solution of methyl 4-hydroxybenzenepropanoate (0.70 g, 3.9 mmol), benzyl alcohol (0.48 mL, 4.7 mmol) and triphenylphosphine (1.2 g, 4.7 mmol) in tetrahydrofuran (5 mL) was added dropwise diethyl azodicarboxylate (0.73 mL, 4.7 mmol), and the mixture was stirred under ice-cooling for 2 hr. Water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The extract was washed with water and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (hexane/ethyl acetate=17:3) to give the title compound (0.62 g, yield 59%) as a powder.

Workup

  1. temperaturecooling for 2 hr
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe extract was washed with water
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (hexane/ethyl acetate=17:3)

Sources & evidence

ORD record
ord-185efe3c4c9149f2b0502b2850626e04
Source dataset
uspto-grants-2011_06
Patent number
US07960369B2

Reaction notes

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