Question

Which one of the following is a free-radical substitution reaction:

• A.
• B.
• C.
• D. CH3CHO+HCN$\rightarrow$CH3CH(OH)CN

Answer 1

Answer: (A)

Answer 2

The chlorination of toluene in the presence of sunlight proceeds through a free radical mechanism. The benzyl radical (C6H5CH2+) is the most stable intermediate, resulting in the formation of benzyl chloride as the primary product.
In contrast, all other reactions in this process occur through an ion formation mechanism.