Classify each alkene in the following vitamins by the number of carbon substituents bonded to thedouble bond.
(a) Which double bonds in ($E$)-ocimene, a major component of the odor of lilac flowers, can exhibitstereoisomerism? (b) Draw a diastereomer of ($E$)-ocimene .
Which alkene in each pair is more stable?
Use curved arrows to show the movement of electrons in the following E2 mechanism. Draw thestructure of the transition state.
Rank the alkyl halides in each group in order of increasing reactivity in an E2 reaction.
What alkenes are formed from each alkyl halide by an E2 reaction? Use the Zaitsev rule to predictthe major product.