IUPAC Rules for Alkene Naming

IUPAC rules for alkene naming show how to name carbon chains with a double bond. A simple alkene changes the alkane suffix -ane to -ene. The double bond must be part of the parent chain, which is the longest carbon chain that contains the maximum number of double bonds.

The chain is numbered so t...

The IUPAC names of alkenes are derived by replacing the suffix -ane of the parent alkane with -ene. The chain is numbered from the end nearest the double bond while assigning the lowest possible consecutive numbers to the double-bond carbon atoms.

In branched alkenes, the longest carbon chain containing the double bond i...