Question

Draw the major organic product(s) of the following reaction (multiple products may be drawn in one box): Draw the major organic product(s) of the following reaction (multiple products may be drawn in one box):

Answer 1

Concepts and reason

Alcohols undergo dehydration in the presence of strong acids and form an alkene as a product. Alkene formation takes place with the help of E1 mechanism and it obeys Zaitsev’s rule.

Reactivity of alcohol: ${{\rm{3}}^{\rm{0}}}{\rm{ > }}\,\,{{\rm{2}}^{\rm{0}}}{\rm{ > }}\,{{\rm{1}}^{\rm{0}}}$

Fundamentals

Zaitsev’s rule: This rule states that, in an elimination reaction, the product that is more substituted is represented as a stable product.

Example for elimination reaction (E1):

In the above reaction, the alkene product is formed from a carbocation intermediate and can undergo rearrangement.

Ans: