Alkene

1+ double bond in an only carbon and
hydrogen atom unsaturated compound
1. Name and number main chain (must contain
double bond). Give the double bond the lowest
carbon # possible in the main chain
2. Add the suffix "ene" to the root for that #, add
di or tri if multiple double bonds
3. Put position # of double bond before main
chain name and name branches
4. Combine name (branch # + branch name +
double bond # + main chain name) {e}