Abstract
Abstract Stereoisomerism of cyclopropanes is systematically discussed by means of stereoisograms and their correlation diagrams. A cyclopropane skeleton is governed by a main RS-stereoisomeric group constructed from its point group D3h, where the main RS-stereoisomeric group generates a set of main stereoisograms. An epimerization process at each of the carbon centers in the cyclopropane skeleton is characterized by an epimeric RS-stereoisomeric group, which generates a set of epimeric stereoisograms. The main RS-stereoisomeric group is combined with the epimeric RS-stereoisomeric groups, generating a stereoisomeric group for characterizing the cyclopropane skeleton. A set of epimeric stereoisograms at each RS-stereogenic center along with a set of main stereoisograms constructs a correlation diagram of stereoisograms. Such correlation diagrams are used to discuss local chirality and local RS-stereogenicity, where the RS-stereogenicity is correlated to the capability of giving RS-stereodescriptors.
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