1. Name the following dienes and label them as isolated or conjugated.

H₂C=CHCH=CHCH₂CH₂CH₂CH₃

1,3-octadiene, “conjugated”

H₂C=CHCH₂CH₂CH(CH₃)CH₂CH=CH₂

4-methyl-1,7-octadiene, “isolated”

2. See "Dienes Resonance"

3. Predict the major product from the dehydrohalogenation of:

4-bromo-1-hexene (H₂C=CHCH₂CH(Br)CH₂CH₃) + KOH (alcohol) ------>

H₂C=CHCH=CHCH₂CH₃ (major because it is conjugated)

H₂C=CHCH₂CH=CHCH₃ (minor, isolated diene)