Question

What is not true regarding the products?

• A. Product $I$ and $II$ are position isomers
• B. Product $I$ and $II$ contains the same number of $s{p}^3$ and $s{p}^2$ carbon atoms
• C. The yield of the product $I$ and $II$ is same
• D. Reaction obeys Saytzeff rule

Answer 1

The correct option is C The yield of the product $I$ and $II$ is same

It is an elimination reaction. According to Saytzeff rule (also known as Zaitsev rule), during dehydration, more substituted alkene (olefin) is formed as a major product. Since greater the substituents on double bond, greater is the stability of alkene.


(A) As can be seen from the reaction, product $I$ and $II$ are position isomers.
(B) Product $I$ and $II$ both contains the same number of $s{p}^3$ carbon atoms i.e. two, and both contains two $s{p}^2$ carbon atoms.
(d) Reaction follows Saytzeff rule.