Alkene nomenclature

Cycloalkenes and their derivatives are named by adapting cycloalkane termmol ogy to the principles of alkene nomenclature... 

In naming alkynes the usual lUPAC rules for hydrocarbons are followed and the suffix ane is replaced by yne Both acetylene and ethyne are acceptable lUPAC names for HC=CH The position of the triple bond along the chain is specified by number m a manner analogous to alkene nomenclature... 

Epoxides are also named as alkene oxides, since they are often prepared by adding an O atom to an alkene (Chapter 12). To name an epoxide this way, mentally replace the epoxide oxygen by a double bond, name the alkene (Section 10.3), and then add the word oxide. For example, the common name for oxirane is ethylene oxide, since it is an epoxide derived from the alkene ethylene. We will use this common method of naming epoxides after the details of alkene nomenclature are presented in Chapter 10. 

The numbers in the names of alkenes refer to the lowest numbered carbon atom in the chain that is part of the C=C bond of the alkene. The name butene means that there are four carbon atoms in the longest chain. Alkene nomenclature must specify whether a given molecule is cis or trans if it is a geometric isomer, such as... 

In cis, frans-alkene nomenclature, it refers to molecules in which the carbon atoms of the main chain are on the same side of the double bond. 

Derivatives and Isomers of Alkenes Nomenclature The Cahn-Ingold-Prelog Priority System Relative Stability of Alkenes Heats of Formation Double Bonds in Rings Physical Properties of Alkenes Alkynes Structure and Bonding... 

FIGURE 3.23 Examples of the naming protocols for alkene nomenclature. 

The procedure for naming alkenes can be summarized as follows. Alkene Nomenclature... 

Alkyne nomenclature is almost the same as alkene nomenclature. The only difference is that the -ene suffix of the corresponding alkene is replaced with -yne. A complete list of rules follows. 

---