Principles of Organic Nomenclature
R-1.2.6 Ring formation or cleavage R-188.8.131.52 The prefix cyclo-. The formation of a ring by means of a direct link between any two atoms of a parent structure, with
loss of one hydrogen atom from each, is indicated by he prefix "cyclo-" followed by the name of the parent structure; when appropriate, this prefix is preceded by the locants of the positions joined
by the new bond and by the Greek letter
(, , )
denoting the configurations at the ends of the new bond. (See R-184.108.40.206 and Section F of the 1979 edition of the IUPAC
Nomenclature of Organic Chemistry).
R-220.127.116.11 The prefix seco-. Cleavage of a ring with addition of one or more hydrogen atoms at each terminal group thus created is indicated by the prefix "seco-" (see
also Section F of the 1979 edition of the IUPAC Nomenclature of Organic Chemistry).
Examples to R-18.104.22.168
Examples to R-22.214.171.124
R-1.2.8 Multiplicative operation
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(Recommendations 1993), 1993, Blackwell Scientific publications, Copyright 1993 IUPAC]. If you need to cite these rules please quote this reference as their source.
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