Question

Which one of the following alcohols reacts instantaneously with Lucas reagent?

(1) \(CH_3 - CH_2 - CH_2 - CH_2 OH\)

(2) \(CH_3 - CH _2 - \underset{CH_3}{\underset{|}CH}-OH\)

(3) \(CH_3 - \underset{CH_3}{\underset{|}CH}-CH_2 OH\)

(4) \(CH_3 - \underset{CH_3}{\underset{|}{\overset{CH_3}{\overset{|}C}}}-OH\)

Answer 1

Correct option is (4) \(CH_3 - \underset{CH_3}{\underset{|}{\overset{CH_3}{\overset{|}C}}}-OH\)

Tertiary alcohols react instantaneously with Lucas reagent and gives immediate turbidity. In case of tertiary alcohols, they form halides easily with Lucas reagent (conc. HCl and \(ZnCl_2\)).