Methyl vinyl ether → Furan-2,5-dione--methoxyethene (1/1)

HRID 728091

Reaction equation

HRID 728091 reaction equation
[CH:1]([O:3][CH3:4])=[CH2:2].[C:5]1(=[O:11])[O:10][C:8](=[O:9])[CH:7]=[CH:6]1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>>[CH3:4][O:3][CH:1]=[CH2:2].[CH:6]1[C:5](=[O:11])[O:10][C:8](=[O:9])[CH:7]=1

Participants

4

Reactant 3

HCID 7861Methyl vinyl etherHCID 7923Maleic Anhydride2×HCID 11776Triphenylphosphine

Product 1

HCID 62708Furan-2,5-dione--methoxyethene (1/1)

Conditions

Temperature
50 °C

Procedure

Then, 15 L methyl vinyl ether were added and slightly heated until all of the maleic anhydride was dissolved. The temperature was raised to about 50° C. and, once the reaction started, a temperature of 55° to 65° C. was maintained in the reaction vessel by suitable cooling. After 4 to 5 hours, the reaction was completed, as determined by the fact that no monomeric maleic anhydride could be detected by means of triphenylphosphine paper. The excess methyl vinyl ether was distilled off. The process yielded 4.8 kg of a colorless, finely powdered 1:1 maleic anhydride-methyl vinyl ether copolymer having a specific viscosity of 3.1.

Workup

  1. dissolutionwas dissolved
  2. temperaturea temperature of 55° to 65° C. was maintained in the reaction vessel by suitable cooling
  3. distillationThe excess methyl vinyl ether was distilled off

Sources & evidence

ORD record
ord-ef986787183c4755bd8ef04dc023b54b
Source dataset
uspto-grants-1991_09
Patent number
US05047490

Linked notes

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