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| 2,3-Dihydropyran | |
|---|---|
 |
|
| IUPAC name | 3,4-Dihydro-2H-pyran |
| Other names | Dihydropyran |
| Identifiers | |
| CAS number | 110-87-2 |
| PubChem | |
| ChemSpider ID | |
| Properties | |
| Molecular formula | C5H8O |
| Molar mass | 84.12 |
| Appearance | colorless liquid |
| Density | 0.992 g/mL at 25 °C |
| Melting point |
-70 °C, 203 K, -94 °F |
| Boiling point |
86 °C, 359 K, 187 °F |
| Solubility in water | organic solvents |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox references |
|
2,3-Dihydropyran is the organic compound with the formula C5H8O. This cyclic ether is used to protect alcohols in organic synthesis. Dihydropyran is prepared by the dehydration of tetrahydrofurfuryl alcohol over alumina at 300-400 °C.1
Dihydropyran reacts with alcohols to form tetrahydropyranyl ethers. These ethers resist a variety of reactions, and the THP group can be removed with aqueous acid.
References
- ^ R. L. Sawyer and D. W. Andrus (1955). "2,3-Dihydropyran". Org. Synth.; Coll. Vol. 3: 276.
Wikipedia content modification information:
- This page was last modified on 20 November 2008, at 21:49.
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