How to name alkenes and cycloalkenes compounds
This post entails how to name alkenes and cycloalkenes in organic chemistry. 1 . Locate the C atoms in the longest C chain that contains the double bond. Use the base name prefix with the ending -ene. 2. Number the C atoms of this chain sequentially beginning at the end nearer the double bond. Insert the number describing the position of the double bond (indicated by its first carbon location) before the base name. (This is necessary only for chains of four or more C atoms, because only one position is possible for a double bond in a chain of two or three carbon atoms.) 3. In naming alkenes, the double bond takes positional precedence over substituents on the carbon chain. The double bond is assigned the lowest possible number. 4. To name compounds with possible geometric isomers, consider the two largest groups within the carbon chain that contains the double bond—these are indicated as part of the base name. The isomer in which the largest groups at each end of the...