Page 30 Flashcards
How does the rate of an E1 reaction change with the number of R groups on the carbon bearing the leaving group?
A: The rate of an E1 reaction increases as the number of R groups increases.
What is the trend in carbocation stability for alkyl halides in E1 reactions?
A: Tertiary carbocations (3°) are more stable than secondary (2°), which are more stable than primary (1°).
Why do tertiary alkyl halides react faster in E1 reactions?
A: Tertiary alkyl halides form the most stable carbocations.
What type of alkyl halide is least likely to undergo an E1 reaction?
A: Primary alkyl halides (1°), due to the low stability of primary carbocations.
What stabilizes carbocations in E1 reactions?
A: Hyperconjugation and inductive effects from alkyl groups stabilize carbocations.
Arrange these alkyl halides in increasing order of reactivity in E1 reactions : RCH₂-X, R₂CH-X, R₃C-X.
A: RCH₂-X < R₂CH-X < R₃C-X.
What intermediate is formed during an E1 reaction?
A: A carbocation intermediate.
What is the relationship between carbocation stability and reaction rate in E1 mechanisms?
A: Greater carbocation stability results in a faster reaction rate.
Why is a tertiary carbocation more stable than a secondary carbocation?
A: A tertiary carbocation is stabilized by three alkyl groups through hyperconjugation and electron donation.
What determines the likelihood of an E1 reaction occurring for a given alkyl halide?
A: The ability to form a stable carbocation intermediate determines the likelihood.
