Phenol → Methyl 2-methyl-4-(phenoxymethyl)benzoate

HRID 1501003Notes

Reaction equation

HRID 1501003 reaction equation
[OH:1][CH2:2][C:3]1[CH:12]=[CH:11][C:6]([C:7]([O:9][CH3:10])=[O:8])=[C:5]([CH3:13])[CH:4]=1.[C:14]1(O)[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C(OC(N=NC(OC(C)C)=O)=O)(C)C>O1CCCC1>[CH3:13][C:5]1[CH:4]=[C:3]([CH2:2][O:1][C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[CH:12]=[CH:11][C:6]=1[C:7]([O:9][CH3:10])=[O:8]

Participants

6

Reactant 4

HCID 996PhenolHCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 23021531Methyl 4-(hydroxymethyl)-2-methylbenzoate

Product 1

HCID 89581027Methyl 2-methyl-4-(phenoxymethyl)benzoateYield 37%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A mixture of methyl 4-(hydroxymethyl)-2-methylbenzoate (126 mg, 0.7 mmol), phenol (66 mg, 0.7 mmol), triphenylphosphine (275 mg, 1.0 mmol) and tetrahydrofuran (15 mL) was stirred at room temperature for half hour. And then azodicarboxylic acid diisopropyl ester (212 mg, 1.0 mmol) was added. The mixture was stirred at room temperature for 12 hours. The resultant mixture was washed with water (20 mL×2). The organic phase was separated, dried over sodium sulfate, filtered and concentrated to give a residue. The residue was purified by column chromatography (silica gel, petroleum ether/ethyl acetate=5:1) to give methyl 2-methyl-4-(phenoxymethyl)benzoate as a colorless oil (66 mg, 37%). 1H NMR (300 MHz, CDCl3): δ 7.92 (d, J=8.4 Hz, 1H), 7.30-7.24 (m, 4H), 6.97-6.94 (m, 3H), 5.06 (s, 2H), 3.88 (s, 3H), 2.61 (s, 3H).

Workup

  1. stirringThe mixture was stirred at room temperature for 12 hours
  2. washThe resultant mixture was washed with water (20 mL×2)
  3. customThe organic phase was separated
  4. dry with materialdried over sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customto give a residue
  8. customThe residue was purified by column chromatography (silica gel, petroleum ether/ethyl acetate=5:1)

Sources & evidence

ORD record
ord-3c594f2934f04b63bd43d6e4df45ffb4
Source dataset
uspto-grants-2015_12
Patent number
US09206128B2

Reaction notes

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