Ethanol → 2-Ethoxalyloxyethyl methacrylate

HRID 6406

Reaction equation

HRID 6406 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].C(O)C>C([O-])(=O)CCCCCCCCCCC.C([O-])(=O)CCCCCCCCCCC.C([Sn+2]CCCC)CCC.C(C1C=C(O)C(C(C)(C)C)=CC=1O)(C)(C)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 3

HCID 702EthanolHCID 7268Diethyl OxalateHCID 133602-Hydroxyethyl Methacrylate

Product 1

HCID 194284412-Ethoxalyloxyethyl methacrylateYield 73.2%

Reagents, catalysts & solvents 2

HCID 23742,5-Di-tert-butylhydroquinoneCatalystHCID 9809426Di-n-butyldilauryltinCatalyst

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 dibutyltin dilaurate (catalyst) and 4 g of 2,5-di-t-butylhydroquinone (polymerization inhibitor) were added. The mixture was heated to keep it at about 120° C. for 2 hours in nitrogen atmosphere with distilling 32.5 ml (0.56 mol) of ethanol away. The reaction mixture was evaporated to remove excess diethyl oxalate and then distilled under vacuum to obtain 84.2 g (yield 73.2%) of 2-ethoxalyloxyethyl methacrylate (bp 124° C./0.4 mmHg).

Workup

  1. customA 500 ml flask equipped with a decanter
  2. additionwere added
  3. temperatureThe mixture was heated
  4. customat about 120° C.
  5. customfor 2 hours
  6. customThe reaction mixture was evaporated
  7. customto remove excess diethyl oxalate
  8. distillationdistilled under vacuum

Sources & evidence

ORD record
ord-1e1b570bc8ce444bb33a68c096a4880b
Source dataset
uspto-grants-1993_09
Patent number
US05248749

Linked notes

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