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NEET levelSingle correct optionDifficulty 1 of 3o2167

Oxymercuration-demercuration ( $Hg (OAc) X_{2}, H X_{2} O$ then $NaBH X_{4}$ ) of but-1-ene gives mainly

Abutan-1-ol
Bbutanal
Cbutane-1,2-diol
Dbutan-2-ol

Answer: D

Oxymercuration follows Markovnikov regiochemistry: OH goes to the more substituted carbon. But-1-ene therefore gives butan-2-ol,

CH X_{3} CH (OH) CH X_{2} CH X_{3}

, and

NaBH X_{4}

only replaces Hg by H.

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