Online Encyclopedia

TERPENES

Online Encyclopedia
Originally appearing in Volume V26, Page 648 of the 1911 Encyclopedia Britannica.
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TERPENES PROPER The terpenes proper may be subdivided into the simple mono-cyclic terpenes and the more complex (usually bicyclic) terpenes. The monocyclic terpenes are hydro derivatives of paracymene. A. v. Baeyer proposed the following nomenclature: the dihydroparacymenes are called terpadienes, the tetrahydrocymenes be-coming terpenes and the hexahydrocymene terpan, the carbon atoms being numbered as shown in the inset formula: In the more complex terpenes the name camphene is retained, and camphane is 42 3\ (8)l C (9) used for the dihydrocamphene. G. (~) C \o 5~—C \C (to) Wagner (Ber., 1894, 27, p. 1636 Anm.) designates the hexahydrocymenes menthans, the tetrahydrocymenes menthenes, and the dihydrocymenes menthadienes. The position
End of Article: TERPENES
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