Norbornadiene is a strained bicyclic hydrocarbon with a sharp, pungent, solvent-like odor reminiscent of camphor and turpentine. It has a somewhat green, acrid character and is not a typical perfumery material — its use is primarily in specialty chemistry rather than fragrance.AI · claude-opus-4-7
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Perfume and Flavor Chemicals, page 1036.
Colorless mobile liquid.
Insoluble in water, soluble in undiluted alcohol and oils, poorly soluble in diluted alcohol.
Very diffusive, gassy-piney, camphoraceous-woody odor (poor tenacity).
It serves mainly as a starting material for the manufacture of industrial chemicals. The material has occasionally been used in Pine needle fragrances to improve the diffusiveness of the fragrance, and to lend initial power and short life to the fragrances which are intended for short-effect purposes, e.g. dishwashing detergent fragrances.
Produced from Cyclopentadiene and Acetylene in a Diels-Alder type reaction.