3,3-Dimethyl-2-butanol cannot be prepared by: A. (CH₃)₃C - CHO MeMgBr-dry ether, H₃O⁺ B. CH₃CH₂C(CH₃)₂CH = CH₂ H₂O/H⁺ C. (CH₃)₃C(CH₃)C = C(CH₃)C(CH₃)₃ (i) O₃/Zn - H₂O, (ii) NaBH₄/MeOH D. (CH₃)₃C - CO - CH₃ LiAlH₄/H₃O^ E. (CH₃)₃C - C CH H₂O, Hg²⁺/H⁺ Choose the correct answer from the options given below:

Organic Compounds Containing Oxygen: JEE Main 2026 Chemistry question

JEE Main 2026 · 22 Jan, Evening shift · Q61

JEE Main 202622 Jan, Evening shiftChemistryHardOrganic Compounds Containing Oxygen65× since 2003

3,3-Dimethyl-2-butanol cannot be prepared by : A.

\mathrm{(CH_3)_3C{-}CHO}\xrightarrow{\text{MeMgBr-dry ether},\ \mathrm{H_3O^+}}

\mathrm{CH_3CH_2C(CH_3)_2CH{=}CH_2}\xrightarrow{\mathrm{H_2O/H^+}}

\mathrm{(CH_3)_3C(CH_3)C{=}C(CH_3)C(CH_3)_3}\xrightarrow{\text{(i) }\mathrm{O_3/Zn{-}H_2O}\text{, (ii) }\mathrm{NaBH_4/MeOH}}

\mathrm{(CH_3)_3C{-}CO{-}CH_3}\xrightarrow{\mathrm{LiAlH_4/H_3O^\oplus}}

\mathrm{(CH_3)_3C{-}C\equiv CH}\xrightarrow{\mathrm{H_2O,\ Hg^{2+}/H^+}}

Choose the correct answer from the options given below :

JEE Main 2026 · 22 Jan, Evening shift · Q61

JEE Main 202622 Jan, Evening shiftChemistryHardOrganic Compounds Containing Oxygen65× since 2003

3,3-Dimethyl-2-butanol cannot be prepared by : A.

\mathrm{(CH_3)_3C{-}CHO}\xrightarrow{\text{MeMgBr-dry ether},\ \mathrm{H_3O^+}}

\mathrm{CH_3CH_2C(CH_3)_2CH{=}CH_2}\xrightarrow{\mathrm{H_2O/H^+}}

\mathrm{(CH_3)_3C(CH_3)C{=}C(CH_3)C(CH_3)_3}\xrightarrow{\text{(i) }\mathrm{O_3/Zn{-}H_2O}\text{, (ii) }\mathrm{NaBH_4/MeOH}}

\mathrm{(CH_3)_3C{-}CO{-}CH_3}\xrightarrow{\mathrm{LiAlH_4/H_3O^\oplus}}

\mathrm{(CH_3)_3C{-}C\equiv CH}\xrightarrow{\mathrm{H_2O,\ Hg^{2+}/H^+}}

Choose the correct answer from the options given below :