Question

In $E_2$ elimination some compounds follows Hoffmann's rule which means :

• A. The double bond goes to the most substituted position
• B. The compound is resistant to elimination
• C. No doubt bond is formed
• D. The double bond goes mainly toward the least substituted carbon

Answer 1

Answer: (D)

The double bond goes mainly toward the least substituted carbon

In $E_2$ elimination some compounds follows Hoffmann's rule which means The double bond goes mainly toward the least substituted carbon.
For example, when 2-fluoro butane is heated with KOH, the major product is 1-butene.