Which one of the following reactions will produce hydrocarbon as the final product?

C H_{3} - C H_{2} - C O - C H_{3} (i) N H_{2} - N H_{2} - ----------- \to (i i) K O H, g l y c o l, Δ

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C H_{3} - C O - C H_{3} Z n - H g / H C l - ------- \to 300^{o} C

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C H_{3} - C H_{2} - C O - H N a O H - --- \to Δ

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C H_{3} - C O - H (i) H_{2} / N i - ------- \to (i i) R e d P / H I

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Solution

The correct options are
A $C H_{3} - C H_{2} - C O - C H_{3} (i) N H_{2} - N H_{2} - ----------- \to (i i) K O H, g l y c o l, Δ$
C $C H_{3} - C O - C H_{3} Z n - H g / H C l - ------- \to 300^{o} C$
D $C H_{3} - C O - H (i) H_{2} / N i - ------- \to (i i) R e d P / H I$
The reaction $C$ will not produce hydrocarbon as the final product.
$(A)$ The reaction is as follows:
$C H_{3} C H_{2} C O C H_{3} (i) Hydrazine - ------------ \to (ii) KOH, glycol, heat C H_{3} C H_{2} C H_{2} C H_{3}$

This is an example of Wolf Kishner reduction in which carbonyl group is reduced to methylene group.

$(B)$ The reaction is as follows:
$C H_{3} C O C H_{3} Z n - H g / H C l - ------- \to 300^{0} C C H_{3} C H_{2} C H_{3}$

This is an example of Clemmensen reduction in which the carbonyl group is reduced to methylene group.

$(C)$ The reaction is as follows:
$2 C H_{3} C H_{2} C H = O N a O H - --- \to Δ C H_{3} C H_{2} C = C (C H_{3}) C H = O$
This is an example of aldol condensation reaction. It is given by carbonyl compounds having alpha hydrogen. The end product of the reaction is $α, β$ unsaturated carbonyl compound.

(D)The reaction is as follows:
$C H_{3} C H = O (i) H_{2} / N i - ------- \to (i i) R e d P / H I C H_{3} C H_{3}$
In this reaction, acetaldehyde is reduced to ethane.

Option A, B and D are correct.

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Similar questions

Functional isomers of $C H_{3} - C H_{2} - C H_{2} - C O O H$

Name the functional groups present in the following compounds: [5 MARKS]

1. ${CH}_{3} - {CH}_{2} - {CH}_{2} - OH$
2. ${CH}_{3} - {CH}_{2} - {CH}_{2} - COOH$
3. ${CH}_{3} - {CH}_{2} - CHO$
4. ${CH}_{3} - CO - {CH}_{2} - {CH}_{3}$
5. ${CH}_{3} - {CH}_{2} - CO-OH$

Q. Which of the following is position isomer of

C H_{3} - C H_{2} - O | | C - C H_{2} - C H_{3}

Q. Write the IUPAC names of the following structural formulae.

a. CH₃-CH₂-CH₂-CH₃	b. CH₃-CHOH-CH₃
c. CH₃-CH₂-COOH	d. CH₃-CH₂-NH₂
e. CH₃-CHO	f. CH₃-CO-CH₂-CH₃

Q. Which pair of the following carbonyl compounds can be differentiated by

I_{2} / N a O H

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