Question

Hunsdiecker reaction is an example of:
A. Addition Reaction
B. Halogenation Reaction
C. Substitution Reaction
D. All of the above

Answer 1

Hint- In order to deal with this question, we will understand the types of reactions which are mentioned in given options. Then we will proceed further with the help of definition of Hunsdiecker reactions.

Complete answer:

In this question there are three types of reactions so first we will understand the basic meaning of these reactions.
Addition reaction: In the simplest of terms of organic chemistry, we can say that an addition reaction is a chemical reaction wherein two or more reactants come together to form a larger single product.
Halogenation reaction: A halogenation reaction is a chemical reaction between a substance and a halogen in which one or more halogen atoms are incorporated into molecules of the substance.
Substitution reaction: The substitution reaction is defined as a reaction in which the functional group of one chemical compound is substituted by another group or it is a reaction which involves the replacement of one atom or a molecule of a compound with another atom or molecule.

Hunsdiecker reaction : Hunsdiecker Reaction is a chemical reaction that involves the silver salts of carboxylic acid reacting with halogens to form an unstable intermediate which further undergoes decarboxylation thermally leading to the formation of a final product known as alkyl halides. This reaction is also called Hunsdiecker–Borodin reaction or Borodin reaction. It is an example of halogenation .

Hence, Hunsdiecker reaction is an example of halogenations reaction.
So, the correct answer is option B.

Note- Hunsdiecker reaction is an example of both a decarboxylation and a halogenation reaction as the product has one fewer carbon atom than the starting material (lost as carbon dioxide) and a halogen atom is introduced in its place.