(CH3)3C-CH=CH2 (3,3-dimethylbut-1-ene) is heated with dilute aqueous H2SO4. The major alcohol formed is

JEE Main levelSingle correct optionDifficulty 2 of 3ap005

$(CH X_{3}) X_{3} C - CH = CH X_{2}$ (3,3-dimethylbut-1-ene) is heated with dilute aqueous $H X_{2} SO X_{4}$ . The major alcohol formed is

Protonation gives the secondary cation

(CH X_{3}) X_{3} C - CH (+) - CH X_{3}

, which rearranges by a methyl shift to the more stable tertiary cation

(CH X_{3}) X_{2} C (+) - CH (CH X_{3}) X_{2}

. Water attacks this cation, giving 2,3-dimethylbutan-2-ol.