Camphene
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Camphene is a bicyclic organic compound. It is one of the most pervasive monoterpenes. As with other terpenes, it is insoluble in water, flammable, colorless, and has a pungent smell.[1] It is a minor constituent of many essential oils such as turpentine, cypress oil, camphor oil, citronella oil, neroli, ginger oil, valerian, and mango.[2] It is produced industrially by isomerization of the more common alpha-pinene using a solid acid catalyst such as titanium dioxide.[3]
Camphene is used in the preparation of fragrances and as a food additive for flavoring. These include isobornyl acetate.
Biosynthesis
Camphene is biosynthesized from linalyl pyrophosphate via a sequence of carbocationic intermediates.[4]
File:CampheneBiosyn.svg Biosynthesis of camphene (one enantiomer) from linalyl pyrophosphate.[4]
