Pinene
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Overview
The chemical compound pinene is a bicyclic terpene (C10H16, 136.24 g/mol ) known as a monoterpene . There are two structural isomers found in nature: α-pinene and β-pinene. As the name suggests, both forms are important constituents of pine resin; they are also found in the resins of many other conifers, and more widely in other plants. Both are also used by many insects in their chemical communication system.
Systematic names are (1S,5S)-2,6,6-trimethylbicyclo[3.1.1]hept-2-ene and (1S,5S)-6,6-dimethyl-2-methylenebicyclo[3.1.1]heptane.
Isomers
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Biosynthesis
α-Pinene and β-pinene are both produced from geranyl pyrophosphate, via cyclisation of linaloyl pyrophosphate followed by loss of a proton from the carbocation equivalent.
Usage
Selective oxidation of pinene with some catalysts in chemical industry give many components for pharmacy, artificial odorants and so on. The primary oxidation product is verbenone.
It can form by simple air oxidation but a synthetic method employs lead tetraacetate .
Pinenes form the primary constituents of turpentine.
References
- ^ J. Mann, R. S. Davidson, J. B. Hobbs, D. V. Banthorpe, J. B. Harborne, Natural Products, pp309-311, Addison Wesley Longman Ltd., Harlow, UK, 1994. ISBN 0-582-06009-5.
- ^ Organic Syntheses, Coll. Vol. 9, p.745 (1998); Vol. 72, p.57 (1995). Article
External links
de:PinenAcknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
