HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
3,4-dihydro-2H-pyran → Diethyl 5-(tetrahydropyran-2-yloxy)pentylphosphonate
Beteiligte Stoffe
| Rolle | Name | HCID | Einwaage |
|---|---|---|---|
| Edukt | 3,4-dihydro-2H-pyran | HCID 8080 | — |
| Edukt | Benzenesulfonic acid, 4-methyl-, compd. with pyridine (1:1) | HCID 466102 | — |
| Edukt | Diethyl 5-hydroxypentylphosphonate | HCID 10680635 | — |
| Lösungsmittel | Dichloromethane | HCID 6344 | — |
| Produkt | Diethyl 5-(tetrahydropyran-2-yloxy)pentylphosphonate | HCID 19689209 | — |
Reaktionsschritte
A solution of 66.9 g (0.298 mol) of diethyl 5-hydroxypentylphosphonate, 32.6 g (0.38 mol) of 3,4-dihydropyran and 1 g (0.004 mol) of pyridinium toluene-4-sulfonate in 800 ml of dichloromethane was heated under reflux for 16 hours. The solution was washed with water and saturated sodium hydrogen carbonate solution, dried over sodium sulfate and distilled in a bulb tube.
Herkunft & Nachweise
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patentnummer | US05728686 |
| Quelldatensatz | uspto-grants-1998_03 |
| ORD ID | ord-1e24e4dd0b0641159e1602ba6f4a336e |
| Quellennotiz | uspto-grants-1998_03 |