HuagongsheHuagongshe Chemistry Print Report · For research reference only
Propylene Glycol → 5-Methyl-1,4-dioxane-2,3-diol
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Propylene Glycol | HCID 1030 | — |
| Reactant | Glyoxal | HCID 7860 | — |
| Product | 5-Methyl-1,4-dioxane-2,3-diol | HCID 15606718 | 93% |
Reaction Steps
1 mol of 1,2-propanediol is stirred with 40% strength by weight aqueous glyoxal solution at 50° C. for 3 hours. Water is then distilled off at 70° C. and 100 mbar, leaving 125 g (93% of theory) of 2,3-dihydroxy-5-methyl-1,4-dioxane in the form of a clear, colorless oil which crystallizes on prolonged standing.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04952332 |
| Source dataset | uspto-grants-1990_08 |
| ORD ID | ord-15947dc9fa6a4e3f9cc97e21ca70b71e |
| Source note | uspto-grants-1990_08 |