Question

Which of the following reacts fastest with conc. $HCl$ ?

• A.
• B.
• C. $(CH_3)_3COH$
• D. $CH_2 = CH-CH_2OH$

Answer 1

Answer: (B)

Answer 2

As benzene ring increases electron density to carbon of C - 0 bond.

Hence, benzylic alcohol is more reactive towards reaction with conc. HCl.