Methanol → HCID 20363198, compound
Reaction equation
[S:1]([C:5]1[C:6]([O:8][C:9](=[O:11])[CH:10]=1)=[O:7])([OH:4])(=[O:3])=[O:2].[CH3:12][O-:13].[Na+:14].C[OH:16]>>[CH3:12][O:13][CH:10]([CH:5]([S:1]([OH:4])(=[O:3])=[O:2])[C:6]([O-:16])=[O:7])[C:9]([O-:8])=[O:11].[Na+:14].[Na+:14].[Na+:14]Participants
4
Conditions
- Temperature
- 80 °C
Procedure
Sulfomaleic anhydride, 3.9 gm, was dissolved in 25 ml of methanol and refluxed for 5 hours. Then, 24 gm of 25% sodium methoxide in methanol was added and the solution was refluxed for 2 hours. The methanol was then evaporated and the residue was dissolved in 100 ml of water and heated for 1 hour at 80°C. The solution was then decolorized with 5 gm of charcoal, filtered and evaporated. The crude residue of trisodium α-methoxy-β-sulfosuccinate was purified by trituration with acetic acid and then filtered, washed with acetone and dried.
Workup
- temperaturerefluxed for 5 hours
- temperaturethe solution was refluxed for 2 hours
- customThe methanol was then evaporated
- dissolutionthe residue was dissolved in 100 ml of water
- filtrationfiltered
- customevaporated
- customThe crude residue of trisodium α-methoxy-β-sulfosuccinate was purified by trituration with acetic acid
- filtrationfiltered
- washwashed with acetone
- customdried
Sources & evidence
- ORD record
- ord-4ca863efe4cf41889d4e2b76a10af3c7
- Source dataset
- uspto-grants-1976_07
- Patent number
- US03970653
Reaction notes
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