Karnataka Board PUCPUC Science 2nd PUC Class 12

How do you convert the following: Ethanenitrile to ethanamine - Chemistry

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How do you convert the following: Ethanenitrile to ethanamine

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Solution

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2014-2015 (March) Patna Set 2

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Identify 'A' and 'B' in the following reaction and rewrite the complete reaction :


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Which amide does produce ethanamine by Hofmann bromamide degradation reaction?


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\[\ce{C6H5CH2Br->[alco.][KCN]A ->[Na/ethanol]B.}\]


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Write the order of reactivity of alkyl halides with ammonia.


Write reactions to bring about the following conversions.

Acetamide to Ethylamine


Write reactions to bring about the following conversions.

Acetamide to methylamine


Explain Hoffmann’s exhaustive alkylation with suitable reactions.


Write reactions for the preparation of ethanamine using Gabriel phthalimide synthesis.


Why cannot aniline be prepared by Gabriel phthalimide synthesis?


Explain the following reaction with a suitable example.

Hofmann elimination reaction


Acetamide on reduction using Na/C2H5OH gives ____________.


Alkyl cyanides on reduction by sodium and ethanol give primary amines. This reaction is called as ____________.


The end product C of the following reaction is

\[\ce{C2H5NH2 ->[HNO2] A ->[PCl5] B ->[NH3][Alcohol] C}\]


____________ can be prepared exclusively by Gabriel phthalimide synthesis.


\[\ce{CH3-CN ->[Na/C2H5OH]}\]

The product formed is ____________.


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Which of the following amines cannot be prepared by Gabriel phthalimide synthesis?


Which of the following does NOT give carbylamine test?


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Assertion (A): Alkyl halides are insoluble in water.

Reason (R): Alkyl halides have halogen attached to sp3 hybrid carbon.

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What is the product when \[\ce{C6H5CH2NH2}\] reacts with \[\ce{HNO2}\]?


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Assertion: Aromatic 1° amines can be prepared by Gabriel Phthalimide Synthesis.

Reason: Aryl halides undergo nucleophilic substitution with anion formed by phthalimide.


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\[\begin{array}{cc}
\ce{O}\phantom{.......................}\\
||\phantom{.......................}\\
\phantom{}\ce{R - C - OH <-[H3O] Χ ->[H] RCH2NH2}
\end{array}\]


Acetamide and ethyl amide can be distinguished by reacting with.


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Ammonolysis of alkyl halides is not a good method to prepare pure primary amines.


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Which of the following amines can be prepared by Gabriel phthalimide reaction?


  1. Phenyl methenamine
  2. N, N - Dimethylaniline
  3. N - Methyl aniline
  4. Benzenamine

Choose the correct order of the basic nature of the above amines.


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\[\ce{C6H5CH2Br ->[Alco.][KCN] A ->[Na/Ethanol][reduction] B}\]


Write the name of reduction product formed when ethyl cyanide is treated with sodium and alcohol.


Write a short note on Ammonolysis.


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