Borneol
| Borneol | |
|---|---|
| Generelt | |
| Systematisk navn | endo-1,7,7-trimethyl- bicyclo[2.2.1]heptan-2-ol |
| Molekylformel | C10H18O |
| Molmasse | 154.25 g/mol |
| Fremtræden | Hvidt, krystallinsk pulver |
| CAS nummer | [[507-70-0] (+) [464-45-9] (-)] |
| SMILES | CC1(C2(C)C)C(O)CC2CC1 |
| Egenskaber | |
| Smeltepunkt | 207 °C |
| Kogepunkt | 210 °C |
| Specifik rotation [α]D | 37.7 ° |
| Sikkerhed | |
| R-sætninger | R36, R37, R38 |
| Flammepunkt | 65 °C |
| Hvis ikke andet er angivet, er data givet for stoffer i standardtilstanden (ved 25 °C, 100 kPa) | |
Borneol er en bicyklisk organisk forbindelse og en terpen. Hydroxylgruppen i denne forbindelse sidder i endo-position. Isoborneol er dens exoisomer.
Kemi
Borneol oxideres nemt til den tilsvarende keton, kamfer. Borneol kan syntetiseres ved reduktion af kamfer i den såkaldte Meerwein-Ponndorf-Verley-reduktion. Den samme reaktion resulterer i isoborneol ved tilstedeværelse af natriumborohydrid.
Borneol findes som to enantiomerer. Den naturligt forkommende d-(+)-borneol er optisk aktiv. Den findes i mange arter af Artemisia og Dipterocarpaceae.
Brug
Borneol bruges i traditionel kinesisk medicin. Det sættes ofte til helsekost, da det menes at stimulere hjertet, åndedrættet, kredsløbet og det centrale nervesystem.
External links
- MSDS Arkiveret 14. februar 2007 hos Wayback Machine
- Borneoloxidation
- Borneol i kinesisk medicin
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