HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
4-Hydroxybenzaldehyde → 4-(2-Tetrahydro-2H-pyranoxy)benzaldehyde
Beteiligte Stoffe
| Rolle | Name | HCID | Einwaage |
|---|---|---|---|
| Edukt | 4-Hydroxybenzaldehyde | HCID 126 | — |
| Edukt | 3,4-dihydro-2H-pyran | HCID 8080 | — |
| Edukt | Benzenesulfonic acid, 4-methyl-, compd. with pyridine (1:1) | HCID 466102 | — |
| Lösungsmittel | Tetrahydrofuran | HCID 8028 | — |
| Produkt | 4-(2-Tetrahydro-2H-pyranoxy)benzaldehyde | HCID 11252736 | — |
Reaktionsschritte
40.0 g of 4-hydroxybenzaldehyde are dissolved in 400 ml of abs. THF under a protective-gas atmosphere, 55.1 g of dihydropyran and 13.7 g of pyridinium p-toluenesulfonate are added, and the mixture is stirred overnight at room temperature. The solvent is removed in a rotary evaporator, and the residue is subjected to conventional work-up, giving 4-(tetrahydropyran-2-yloxy)benzaldehyde (“BA”) as a colourless oil.
Herkunft & Nachweise
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patentnummer | US06645991B1 |
| Quelldatensatz | uspto-grants-2003_11 |
| ORD ID | ord-4c452461370e4d9e8bf9bcf189ef2201 |
| Quellennotiz | uspto-grants-2003_11 |