HuagongsheHuagongshe Chemistry Print Report · For research reference only
Ethylene Glycol → 2-[2-(Methylsulfanyl)ethyl]-1,3-dioxolane
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Ethylene Glycol | HCID 174 | — |
| Reactant | p-Toluenesulfonic acid | HCID 6101 | — |
| Reactant | Sodium Carbonate | HCID 10340 | — |
| Reactant | Methional | HCID 18635 | — |
| Solvent | Benzene | HCID 241 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | 1,4-Dioxane | HCID 31275 | — |
| Product | 2-[2-(Methylsulfanyl)ethyl]-1,3-dioxolane | HCID 20398666 | — |
Reaction Steps
1040 g (10 moles) of freshly distilled methional, 650 g (10.5 moles) of ethylene glycol, 400 cc of benzene, 800 cc of dioxan and 10 g of p-toluene sulphonic acid are heated under reflux until the azeotropic entrainment of the water formed during the reaction, which takes 2 hours, is over. The acid medium is then neutralised by the addition of 10 g of dry sodium carbonate, after which the solution is concentrated to dryness in a water pump vacuum.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04153442 |
| Source dataset | uspto-grants-1979_05 |
| ORD ID | ord-7ea0a2b840064fc5ad51be1b47b959b2 |
| Source note | uspto-grants-1979_05 |