D106208

3,4-Dihydro-2H-Pyran

97%

• Synonym(e): 2,3,4-Trihydropyran, 2H-3,4-Dihydropyran, Dihydro-2H-pyran, Dihydropyran
• Empirische Formel (Hill-System): C₅H₈O
• CAS-Nummer: 110-87-2
• Molekulargewicht: 84.12
• Beilstein: 103493
• EG-Nummer: 203-810-4
• MDL-Nummer: MFCD00006558
• UNSPSC-Code: 12352005
• PubChem Substanz-ID: 24893341
• NACRES: NA.22

Eigenschaften

• Dampfdichte: 2.9 (vs air)
• Qualitätsniveau: 200
• Assay: 97%
• Form: liquid
• Brechungsindex: n20/D 1.440 (lit.)
• bp: 86 °C (lit.)
• mp (Schmelzpunkt): −70 °C (lit.)
• Dichte: 0.922 g/mL at 25 °C (lit.)
• SMILES String: C1COC=CC1
• InChI: 1S/C5H8O/c1-2-4-6-5-3-1/h2,4H,1,3,5H2
• InChIKey: BUDQDWGNQVEFAC-UHFFFAOYSA-N

Beschreibung

Anwendung

3,4-Dihydro-2H-pyran can be used as a reactant to synthesize:

• Tetrahydropyranylated product from alcohols in the presence of phenolsulfonic acid-formaldehyde resin catalyst.
• Tetrahydropyran derivatives by reacting pyrazoles in the presence of trifluoroacetic acid.
• 1,2,3,4-Tetrahydroquinoline derivatives by cation-exchange resin catalyzed Domino reaction with aromatic amines.
• Tetrahydroquinolines from aryl azides in the presence of FeCl₃-NaI.

Sicherheitshinweise

• Piktogramme: GHS02,GHS07
• Signalwort: Danger
• H-Sätze: H225,H315,H317,H319,H412
• P-Sätze: P210 - P233 - P273 - P280 - P303 + P361 + P353 - P305 + P351 + P338
• Gefahreneinstufungen: Aquatic Chronic 3 - Eye Irrit. 2 - Flam. Liq. 2 - Skin Irrit. 2 - Skin Sens. 1B
• Zusätzliche Gefahrenhinweise: EUH019
• Lagerklassenschlüssel: 3 - Flammable liquids
• WGK: WGK 1
• Flammpunkt (°F): 5.0 °F - closed cup
• Flammpunkt (°C): -15 °C - closed cup
• Persönliche Schutzausrüstung: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter