74.2 - Bicyclic terpene hydrocarbons having the skeleton of Formula III, IV, or V and additional side chains except methyl (or methylene if one methylene group is already present) are named, respectively, as carane, carene, caradiene, etc.; pinane, pinene, pinadiene, etc.; bornane, bornene, bornadiene, etc. They are given, respectively, the fixed numbering shown for carane (Formula III), pinane (Formula IV), and bornane (Formula V). Other hydrocarbons containing the ring-skeleton of carane, pinane, or bornane are named, respectively, from norcarane (Formula VI), norpinane (Formula VII), or norbornane (Formula VIII). These names are preferred to those from bicyclo[4.1.0.]heptane, bicyclo[3.1.1]heptane, or bicyclo[2.2.1]heptane. The nor-names are given systematic bicyclo numbering (cf. Rule A-31).
Examples to Rule A-74.1
74.3 - The name "camphene" is retained for the unsubstituted compound 2,2-dimethyl-3-methylenenorbornane.
Examples to Rule A-74.2
Examples to Rule A-74.3
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