Okuyama & Maskill: Organic Chemistry - Elimination reactions

Which of the following statements regarding the E1 mechanism is wrong?

• Reactions by the E1 mechanism are unimolecular in the rate-determining step.

• Reactions by the E1 mechanism are generally first order.

• Reactions by the E1 mechanism usually occur in one step.

• Reactions by the E1 mechanism are multi-step reactions.

Which of the following statements regarding the E2 mechanism is wrong?

• Reactions by the E2 mechanism are always bimolecular.

• Reactions by the E2 mechanism are generally second order.

• Reactions by the E2 mechanism usually occur in one step.

• Reactions by the E2 mechanism usually occur in two steps.

Which of the following reacts by the E1 mechanism in ethanol most readily?

• 
• 
• 
• 

Which is the main product of the following reaction?

• 
• 
• 
• 

Which is the main product of the following reaction?

• 
• 
• 
• 

Elimination reactions of compounds 1 and 2 with sodium ethoxide give two alkenes, A and B, but with different selectivities. Which of the following statements best indicates the most probable outcome?

• A both from 1and 2

• B both from 1 and 2

• A from 1 and B from 2

• B from 1 and A from 2

Which is the main alkene product in the following reaction?

• 
• 
• 
• 

Elimination reactions of cis- and trans-1-bromo-2-methylcyclohexanes with NaOEt in EtOH can give the same or different main product, 1-methylcyclohexene (1) or 3-methylcyclohexene (2). Which of (a)-(d) indicates the main products?

• 1 both from the cis and trans substrates

• 2 both from the cis and trans substrates

• 1 from the cis and 2 from the trans substrate

• 2 from the cis and 1 from the trans substrate

Which is the main product of the following reaction?

• 
• 
• 
• 

Which is the main product of the following reaction?

• 
• 
• 
•