3,6-Dihydro-2H-pyran

• CAT Number: R018833
• CAS Number: 3174-74-1
• Molecular Formula: C5H8O
• Molecular Weight: 84.12
• Purity: ≥95%
• Synonyms: 3,6-Dihydro-2H-pyran; 5,6-Dihydro-2H-pyran
• Storage: Store at -20°C
• IUPAC Name: 3,6-dihydro-2H-pyran
• InChI: InChI=1S/C5H8O/c1-2-4-6-5-3-1/h1-2H,3-5H2
• InChIKey: MUGSKSNNEORSJG-UHFFFAOYSA-N
• SMILES: C1COCC=C1

3,6-Dihydro-2H-pyran(CAT: R018833) is a six-membered heterocyclic compound containing one oxygen atom and a double bond, making it a key reagent in organic synthesis. Commonly used as a protecting group for alcohols, it forms stable tetrahydropyranyl (THP) ethers under mild acidic conditions, which can be easily removed later. Its utility lies in its ability to temporarily mask hydroxyl groups during multi-step syntheses, preserving reactivity elsewhere in the molecule. 3,6-Dihydro-2H-pyran is also a valuable intermediate in the preparation of pharmaceuticals, fine chemicals, and natural product analogs.