Which of the following reagents is suitable f | vedclass

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(B) The reaction involves the reduction of a carbonyl group $(C=O)$ to a methylene group $(-CH_{2}-)$ in the presence of a carbon-carbon double bond $

Vedclass · Accepted Answer

$NH_{2}NH_{2} / C_{2}H_{5}O^{-}Na^{+}$

Vedclass · Answer

(B) The reaction involves the reduction of a carbonyl group $(C=O)$ to a methylene group $(-CH_{2}-)$ in the presence of a carbon-carbon double bond $(C=C)$.Wolff-Kishner reduction,which uses hydrazine $(NH_{2}NH_{2})$ followed by a strong base like sodium ethoxide $(C_{2}H_{5}O^{-}Na^{+})$ and heat,is specifically used to reduce carbonyl groups to alkanes without affecting the $C=C$ double bond.$NaBH_{4}$ reduces carbonyls but is typically used for alcohols,and $Ni/H_{2}$ would reduce both the carbonyl and the $C=C$ double bond.

List-$I$ Reaction	List-$II$ Reagents
$A$. Hoffmann Degradation	$I$. Conc. $KOH, \Delta$
$B$. Clemmensen reduction	$II$. $CHCl_3, NaOH / H_3O^{+}$
$C$. Cannizzaro reaction	$III$. $Br_2, NaOH$
$D$. Reimer-Tiemann reaction	$IV$. $Zn-Hg / HCl$

Column-$I$ (Example)	Column-$II$ (Reaction)
$(A)$ $CH_3COCl + H_2 \xrightarrow{Pd-C/BaSO_4} CH_3CHO$	$(1)$ Friedel-Crafts acylation
$(B)$ $C_6H_5CHO \xrightarrow{NaOH} C_6H_5CH_2OH + C_6H_5COONa$	$(2)$ $HVZ$ reaction
$(C)$ $C_6H_6 + CH_3COCl \xrightarrow{AlCl_3} C_6H_5COCH_3$	$(3)$ Aldol condensation
$(D)$ $R-CH_2COOH \xrightarrow{Br_2/Red P} R-CH(Br)COOH$	$(4)$ Cannizzaro's reaction
$(E)$ $CH_3-CN \xrightarrow{SnCl_2/HCl, H_2O/H^+} CH_3-CHO$	$(5)$ Rosenmund's reduction
$(F)$ $2CH_3CHO \xrightarrow{NaOH} CH_3-CH=CH-CHO$	$(6)$ Stephen's reaction

Which of the following reagents is suitable for the preparation of the product in the above reaction?

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Match List-$I$ with List-$II$.

List-$I$ Reaction List-$II$ Reagents

$A$. Hoffmann Degradation $I$. Conc. $KOH, \Delta$

$B$. Clemmensen reduction $II$. $CHCl_3, NaOH / H_3O^{+}$

$C$. Cannizzaro reaction $III$. $Br_2, NaOH$

$D$. Reimer-Tiemann reaction $IV$. $Zn-Hg / HCl$

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