Q56P Which electrophilic addition rea... [FREE SOLUTION]

Chapter 6: Q56P (page 282)

Which electrophilic addition reactions
a. form a carbocation intermediate? c. form a three-membered ring intermediate?
b. form no intermediate? d. form a five-membered ring intermediate?

Short Answer

Expert verified

a) Both syn and anti addition occur in electrophilic addition reactions that form a carbocation intermediate.

b) Epoxidation does not form an intermediate. If a reaction does not form a carbocation intermediate, a carbocation rearrangement cannot occur. Hydroboration does not form an intermediate.

c) The addition of Br₂or Cl₂ forms an intermediate with a three-membered ring that reacts with nucleophiles.

d) Ozonolysis forms an intermediate with a five-membered ring.

Step by step solution

Some reactions

Syn and anti addition=

Epoxidation reaction=

Hydroboration reaction=

Addition of Br₂or Cl₂=

Ozonolysis=

Final answer

So by seeing these reactions we conclude that

a) Both syn and anti addition occur in electrophilic addition reactions that form a carbocation intermediate.

b) Epoxidation does not form an intermediate. If a reaction does not form a carbocation intermediate, a carbocation rearrangement cannot occur. Hydroboration does not form an intermediate.

c) The addition of Br₂or Cl₂ forms an intermediate with a three-membered ring that reacts with nucleophiles.

d) Ozonolysis forms an intermediate with a five-membered ring.