2,5-Norbornadiene CAS No. 121-46-0
Pharmaceutical Materials 2025-03-20
| Aspect | Details |
|---|---|
| Chemical Name | 2.5-Norbornadiene |
| Aliases | 2.5-NBD, Dicycloheptadiene, Bicyclo [2.2.1]hepta-2.5-diene |
| CAS Number | 121-46-0 |
| Molecular Formula | C₇H₈ |
| Molecular Weight | 92.1 g/mol |
| Physical State | Colorless liquid |
| Boiling Point | 89°C |
| Density | 0.85 g/cm³ |
| Solubility | Soluble in most organic solvents, insoluble in water |
| Hazards | Extremely flammable, toxic. Its vapor can form explosive mixtures with air. In case of contact, it can cause skin and eye irritation, and inhalation may lead to respiratory issues and other health problems. |
| Applications | Used as an intermediate in organic synthesis and pharmaceutical chemistry for the production of cyclopentadiene-based pesticides and unsaturated polyester resins. It is also utilized in the preparation of photochromic compounds, catalysts, and as a ligand in transition metal complexes. |
| Preparation | Can be synthesized through the Diels-Alder reaction of cyclopentadiene with acetylene. |
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