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Bicyclo-[2.2.1] heptane (Synonyms: 2-Norbornylene, 2-Norbornene and Norcamphene). It is made by the Diels-Alder reaction of cyclopentadiene and ethylene, two readily available hydrocarbons. The resulting molecule, a bicyclic olefin, is a bridged six-membered ring with a double bond on one side. The bridged ring puts extra strain on the double bond, making it highly reactive and useful in organic chemical synthesis. Reactions include ring-opening metathesis polymerization (ROMP), radical or cationic polymerization, and vinyl or addition polymerization. Norbornene is a liquid with low viscosity above 47 °C. Solid norbornene has a high solubility in common organic solvents as for example in acetone and in aliphatic, cycloaliphatic or aromatic solvents. Used in high-damping rubber and in the manufacture of COC polymers. 2-Norbornene is listed in the following international chemical inventories: EINECS Number 207-866-0, SWISS Number G-4815, TSCA, NDSL, AICS, ENCS Number 4-1763 (MITI) and PICCS.
Norbornene
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Norbornene
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