1 Bromo 2 Methylcyclohexane Elimination

Answer the following questions so press 'Submit' to get your score.

Question 1

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

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

b) Reactions by the E1 mechanism are generally start lodge.

c) Reactions by the E1 mechanism usually occur in one step.

d) Reactions by the E1 mechanism are multi-step reactions.

Question 2

Which of the following statements regarding the E2 machinery is incorrect?

a) Reactions past the E2 mechanism are always bimolecular.

b) Reactions by the E2 mechanism are more often than not second order.

c) Reactions by the E2 machinery ordinarily occur in one step.

d) Reactions past the E2 mechanism usually occur in two steps.

Question 3

Which of the post-obit reacts by the E1 mechanism in ethanol virtually readily?

a) CH _three CH _ii CH ₂ CH ₂ Br

b) (CH _three ) ₂ CHCH _ii Br

c) (CH ₃ ) ₃ CBr

Question 4

Which is the principal product of the following reaction?

Question 5

Which is the main production of the following reaction?

Question half-dozen

Elimination reactions of compounds 1 and 2 with sodium ethoxide requite two alkenes, A and B, but with unlike selectivities. Which of the post-obit statements best indicates the almost probable result?

a) A both from 1and two

b) B both from 1 and 2

c) A from 1 and B from 2

d) B from 1 and A from 2

Question 7

Which is the main alkene product in the following reaction?

Question 8

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

a) i both from the cis and trans substrates

b) 2 both from the cis and trans substrates

c) one from the cis and 2 from the trans substrate

d) 2 from the cis and ane from the trans substrate

Question 9

Which is the main product of the following reaction?

Question ten

Which is the main product of the following reaction?

Question xi

Which of the following statements regarding mechanisms of elimination reaction is incorrect?

a) The E1 mechanism does non require a base.

b) The E2 machinery more often than not occurs under highly bones weather condition.

c) The E2 mechanism is stereospecific.

d) The E1cB mechanism is usually unimolecular in the charge per unit-determining step but leads to a 2d order rate law.

Question 12

Which of the following statements regarding regioselectivity of elimination reactions is incorrect?

a) More substituted, more than stable alkenes are generally formed preferentially by both E1 and E2 mechanisms.

b) Substrates with a poorer nucleofuge tend to give the less substituted alkenes.

c) Sterically hindered, bulky bases tend to give the less substituted alkenes.

d) Reactions past the E1 mechanism are mostly less regioselective than those by the E2 mechanism.

Question 13

Which chemical compound is most reactive in solvolysis (E1 and Southward_Northward1) in ethanoic acid?

Question 14

Which is the main production of the post-obit reaction?

Question 15

Which is the main product of the following reaction?

Question xvi

Which is the main product of the following reaction?

Question 17

Which of the compounds bearing different nucleofuges Y in (a)-(d) gives the final alkene most selectively in the following reaction?

a) Y = F

b) Y = Cl

c) Y = Br

d) Y = OSO₂CF₃

Question 18

Which is the master production of the post-obit reaction?

Question 19

Reactions of dideuterated bromocyclohexanes, 1 and 2, by the E2 mechanism requite monodeuterated cyclohexene A and dideuterated cyclohexene B. Which of the statements (a)-(d) best indicates the most likely selectivities of 2 reactions.