HuagongsheHuagongshe Chemistry Print Report · For research reference only
4-Hydroxybenzyl Alcohol → 4-Acetoxybenzyl alcohol
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 4-Hydroxybenzyl Alcohol | HCID 125 | — |
| Reactant | Diethyl Ether | HCID 3283 | — |
| Reactant | Acetic Anhydride | HCID 7918 | — |
| Solvent | Potassium Hydroxide | HCID 14797 | — |
| Product | 4-Acetoxybenzyl alcohol | HCID 95906 | 45% |
Reaction Steps
8.4 g 4-hydroxybenzyl-alcohol, are dissolved in 11 ml 5.45M KOH, while cooling the reaction mixture with ice. 6.48 ml acetic anhydride are then added in 15 minutes to the solution obtained. An equal volume of ethyl ether is added, and once the organic phase is separated, it is washed with a NaHCO3 oversaturated solution and dried on anhydrous sodium sulphate and finally evaporated. The obtained product is then distilled (b.p. 140°-150° C.) under vacuum (3 mm Hg), then purified by silica gel chromatographic column (eluant cyclohexane/ethyl acetate 8: 2). A substantially pure product is obtained to be used for the successive reaction (yield 45%)
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05401853 |
| Source dataset | uspto-grants-1995_03 |
| ORD ID | ord-194e2a0b3b8847edb7e9b74f18332038 |
| Source note | uspto-grants-1995_03 |