Question

For the following compound, the correct order of ease with which hydrogen abstraction takes place from carbons numbered as $1$ to $6$ is:

• A. $2>6>4=5>1>3$
• B. $1>2>6>3>4=5$
• C. $2>1>6>3>4=5$
• D. $6>1>2>4=5>3$

Answer 1

Answer: (A)

$2>6>4=5>1>3$

Reason:- Since $H$ of $C-2$ is attached with sp${}^2$ $(C-4)$ and also oxygen (more electronegative) so it is more susceptible for abstraction.