No abstract

No abstract

No abstract

In a previous communication, rules for unambiguous specification of stereoisomerism about a double bond using the descriptors E and Z were reported. These rules have been complemented to permit the derivation of a unique set of configurational descriptors for a compound. Use of these descriptor sets with chemical nomenclature and other forms of constitutional description of a compound is discussed.In a previous paper ( I ) a set of rules was described which permits unambiguous specification of stereoisomerism about a double bond employing the configurational descriptiors E and 2. The purpose of this paper is to report the extension of these rules to permit the derivation of a unique set of configurational descriptors for each compound which contains one or more stereogenic ( 2 ) double bonds. The descriptor E or 2 is assigned to each such double bond using Rules I and I1 ( I ) . Three additional rules, 111-V, provide for the derivation of the unique descriptor set for each compound. RULES FOR SPECIFYING CONFIGURATIONS ABOUT DOUBLE BONDSE and 2 are defined as follows:

No abstract