Free Radicals

Question 1

What is the most stable to least stable radical?

Answer 1

Most Substituted

Benzene/Alkene
Tertiary
Secondary
Primary
Methyl

Question 2

What are the 3 steps of a radical mechanism?

Answer 2

Initiation
Propogation
Termination

Question 3

In radical addition of HBr to alkene, where does the Br add to?

Answer 3

Least substituted / Anti-markovnikov

Question 4

If your product has a stereocenter, your products =

Answer 4

racemic mixture

Question 5

What is this rxn called?

Answer 5

Halogenation of Alkanes

Question 6

Is Fluroine useful in radical haolgenation?

Answer 6

No, too violent

Question 7

Is Iodine useful in radical haolgenation?

Answer 7

No, too slow to be useful

Question 8

How do you initiate a radical reaction?

Answer 8

Break the bond with two fish hook arrows to separate the two atoms.

Question 9

How many reactions are there for propogation?

Answer 9

At least 2

Question 10

How do you terminate?

Answer 10

Recombine 2 radicals from propogation step

Question 11

What is this rxn called?

What is special about its addition?

Answer 11

Radical addition of HBr to Alkene

Anti-markovnikov