Which of the following reaction is called carbylamine reaction (or isocyanide test):

C_{2} H_{5} N H_{2} + C H C l_{3} + 3 K O H w a r m - -- \to C H_{3} C H_{2} N C + 3 K C l + 3 H_{2} O

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C_{2} H_{5} N H_{2} + C H_{3} C H O H^{+} - - \to C H_{3} C H = N C H_{2} C H_{3} + H_{2} O

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C_{2} H_{5} N H_{2} + C_{6} H_{5} C O C l a q N a O H - ----- \to C_{2} H_{5} N H C O C_{6} H_{5} + H C l

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C_{2} H_{5} N H_{2} + H N O_{2} H_{2} O - - \to C_{2} H_{5} O H + N_{2}

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Solution

The correct option is A $C_{2} H_{5} N H_{2} + C H C l_{3} + 3 K O H w a r m - -- \to C H_{3} C H_{2} N C + 3 K C l + 3 H_{2} O$
The following reaction is called carbylamine reaction (or isocyanide test).
$C_{2} H_{5} N H_{2} + C H C l_{3} + 3 K O H w a r m - -- \to C H_{3} C H_{2} N C + 3 K C l + 3 H_{2} O$
Aliphatic and aromatic primary amines when warmed with chloroform and an alcoholic solution of KOH, form isocyanide or carbylamine which have very unpleasant or foul smell.

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C_{2} H_{5} N H_{2} + H C l ⟶

Arrange the following in increasing order of their basic strength:

(i) C₂H₅NH₂, C₆H₅NH₂, NH₃, C₆H₅CH₂NH₂ and (C₂H₅)₂NH

(ii) C₂H₅NH₂, (C₂H₅)₂NH, (C₂H₅)₃N, C₆H₅NH₂

(iii) CH₃NH₂, (CH₃)₂NH, (CH₃)₃N, C₆H₅NH₂, C₆H₅CH₂NH₂.

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

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