Author Question: The first step in the mechanism of acid catalyzed ring opening of oxirane is: A) protonation of ... (Read 61 times)

JGIBBSON · **on:** Aug 23, 2018

The first step in the mechanism of acid catalyzed ring opening of oxirane is:
A)
protonation of the oxygen in the oxirane.
B)
anion attack of the carbon in the oxirane.
C)
cation attack of the carbon in the oxirane.
D)
formation of a stable carbocation.
E)
none of the above.

Question 2

Which of the following molecules is classified as an organic peroxy acid?
A)

B)

C)

D)

E)

Question 3

The organic products of the reaction below are

are:
A)
ethanol and iodobenzene.
B)
ethyl iodide and iodobenzene.
C)
ethanol and phenol.
D)
ethyl iodide and phenol.
E)
ethylene oxide and phenol.

Question 4

Which of following ethers will cleave by an S_N1 mechanism?
A)

B)

C)

D)

E)

Question 5

Which of the following ethers will cleave the fastest with H₂O and H⁺?
A)

B)

C)

D)

E)

Question 6

The mechanism by which ethers are cleaved in concentrated HI is:
A)
S_N1
B)
S_N2
C)
E1
D)
E2
E)
none of these

frre432 · **Reply #1 on:** Aug 23, 2018

Answer to Question 1

a

Answer to Question 2

e

Answer to Question 3

d

Answer to Question 4

d

Answer to Question 5

d

Answer to Question 6

b