Alcohols Phenols And Ethers Question 201
Question: The alcohol which easily reacts with conc. HCl is
[MP PMT 1985]
Options:
A) $ CH_3-CHOH-CH_2-CH_3 $
B) $ {{(CH_3)}_3}-C-OH $
C) $ CH_3-CH_2-CH_2-CH_2-OH $
D) $ {{(CH_3)}_3}-CH-CH_2OH $
Show Answer
Answer:
Correct Answer: B
Solution:
Tertiary alcohol readily reacts with halogen acid $ CH_3\to \underset{\underset{CH_3}{\mathop{\uparrow }}}{\mathop{\overset{\overset{CH_3}{\mathop{\downarrow }}}{\mathop{C-OH}}}}\to CH_3-\underset{\underset{CH_3}{\mathop{|}}}{\mathop{\overset{\overset{CH_3}{\mathop{|}}}{\mathop{{C^{+}}+O{H^{-}}}}}} $ Presence of 3 alkyl group increases electron density on $ 3^{o} $ carbon atom. Hence $ -OH $ group is easily removed. After the removal of $ -OH $ group $ 3^{o} $ carbonium ion is formed which is most stable
BETA
