Which of the following reagents reacts differently with $H C H O, C H_{3} C H O a n d C H_{3} C O C H_{3} ?$

H C N

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N H_{2} O H

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C_{6} H_{5} N H N H_{2}

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N H_{3}

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Solution

The correct option is D $N H_{3}$
$H C N$ give addition reaction and have same mechanism with all reactant. while when $N H_{2} O H a n d P h H N H_{2}$ react with carbonyl compound it involved removal of $H_{2} O$ and react with same mechanism.

$N H_{3}$ react differently with all this reactant as follow.

$(i) 6 H C H O + 4 N H_{3} \to (C H_{2})_{6} N_{4} + 6 H_{2} O$

$(i i) C H_{3} C H O + N H_{3} \to C H_{3} C H (O H) N H_{2}$

$(i i i) 2 C H_{3} C O C H_{3} + N H_{3} \to (C H_{3})_{2} C (N H_{2}) C H_{2} C O C H_{3}$ .

Suggest Corrections

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