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JIPMER 2005

Exam: JIPMER
Year: 2005
Subject: Chemistry
Chapter: Aldehydes and Ketones

JIPMER 2005 · Chemistry · Aldehydes and Ketones

CH_3 CH_2 C CH R butanone -2 . R is

\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{C} \equiv \mathrm{CH} \xrightarrow{R}

butanone

-2 . R

is

CH_3 CH_2 C CH R butanone -2 . R is

Options

A $\mathrm{Hg}^{++} /$ dil $\cdot \mathrm{H}_2 \mathrm{SO}_4$
B $\mathrm{KMnO}_4$
C $\mathrm{KClO}_3$
D $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$

Correct answer

A. $\mathrm{Hg}^{++} /$ dil $\cdot \mathrm{H}_2 \mathrm{SO}_4$

Step-by-step solution

Alkyne change to ketone upon hydrolysis in presence of mercury salt.

\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{C} \equiv \mathrm{CH} \xrightarrow[\mathrm{Hg}^{2+} / \mathrm{H}_2 \mathrm{SO}_4]{\mathrm{H} . \mathrm{OH}}

CH_3 CH_2 C CH R butanone -2 . R is

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