Ethanol → 2-Ethoxalyloxyethyl methacrylate

HRID 1197207

Reaction equation

HRID 1197207 reaction equation
[C:1]([O:6][CH2:7][CH2:8][OH:9])(=[O:5])[C:2]([CH3:4])=[CH2:3].[C:10](OCC)(=[O:16])[C:11]([O:13][CH2:14][CH3:15])=[O:12].C1(C)C=CC(S(O)(=O)=O)=CC=1.C(C1C=C(O)C(C(C)(C)C)=CC=1O)(C)(C)C.C(O)C>>[C:1]([O:6][CH2:7][CH2:8][O:9][C:10]([C:11]([O:13][CH2:14][CH3:15])=[O:12])=[O:16])(=[O:5])[C:2]([CH3:4])=[CH2:3]

Participants

6

Reactant 5

HCID 702EthanolHCID 23742,5-Di-tert-butylhydroquinoneHCID 6101p-Toluenesulfonic acidHCID 7268Diethyl OxalateHCID 133602-Hydroxyethyl Methacrylate

Product 1

HCID 194284412-Ethoxalyloxyethyl methacrylateYield 52.4%

Procedure

A 500 ml flask equipped with a decanter, a thermometer, a stirrer and an inlet for nitrogen gas was charged with 65.1 g (0.5 mol) of 2-hydroxyethyl methacrylate and 365.4 g (2.5 mol) of diethyl oxalate, to which 2 g (10 mmol) of p-toluenesulfonic acid (catalyst) and 4 g of 2,5-di-t-butylhydroquinone (polymerization inhibitor) were added. The mixture was heated to keep about 130° C. for 3 hours in nitrogen atmosphere with distilling 23.5 ml (0.40 mol) of ethanol away. The reaction mixture was evaporated to remove excess diethyl oxalate and then distilled under vacuum to obtain 64.8 g (yield 52.4% of 2-ethoxalyloxyethyl methacrylate (bp 95°-125° C./0.3 mmHg).

Workup

  1. customA 500 ml flask equipped with a decanter
  2. additionwere added
  3. temperatureThe mixture was heated
  4. customThe reaction mixture was evaporated
  5. customto remove excess diethyl oxalate
  6. distillationdistilled under vacuum

Sources & evidence

ORD record
ord-6a533ce4e8664dcfb4e421dc654d138b
Source dataset
uspto-grants-1992_05
Patent number
US05117044

Linked notes

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