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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Write reactions to bring about the following conversions. Acetamide to methylamine

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प्रश्न

Write reactions to bring about the following conversions.

Acetamide to methylamine

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उत्तर

\[\begin{array}{cc}
\ce{O}\phantom{.............................................................}\\
||\phantom{.............................................................}\\
\ce{\underset{\text{Acetamide}}{CH3 - C - NH2} + Br2 + 4KOH_{(aq)} ->[\Delta]\underset{\text{Methylamine}}{CH3 - NH2} + 2KBr + K2CO3 + 2H2O}\\\end{array}\]

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पाठ 13: Amines - Short answer questions (Type-II)

संबंधित प्रश्‍न

How is ethyl amine prepared from methyl iodide?


Illustrate the following reaction giving suitable example in each case:Gabriel phthalimide synthesis


How do you convert the following: Ethanenitrile to ethanamine


Give the structures of A, B and C in the following reactions :


Accomplish the following conversion:

Benzyl chloride to 2-phenylethanamine


Accomplish the following conversion:

Benzamide to toluene


Give the structures of A, B and C in the following reaction:

\[\ce{CH3COOH ->[NH3][\Delta] A ->[NaOBr] B ->[NaNO2/HCl] C}\]


Give the structures of A, B and C in the following reaction:

\[\ce{C6H5NO2 ->[Fe/HCl] A ->[HNO2][273 K] B ->[C6H5OH] C}\]


Write the reaction of aliphatic primary amine with nitrous acid.


Give a plausible explanation for the following:

Why are amines less acidic than alcohols of comparable molecular masses?


Explain the mechanism of action of hydroiodic acid on 3-methylbutan-2-ol.


Mention 'two' uses of propan-2-one.


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


Answer the following

Write a reaction to convert acetic acid into methylamine.


Explain Hoffmann’s exhaustive alkylation with suitable reactions.


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.


What is the molar mass of the amine formed when acetamide undergoes Hofmann bromamide degradation?


Which nitrogen containing compound amongst the following would undergo Mendius reduction to furnish primary amine \[\ce{(R - NH2)}\]?


Identify the product obtained when benzamide is treated with bromine and aqueous sodium hydroxide?


The reduction of alkyl cyanide with sodium and ethanol to give primary amines is, ____________.


Identify 'A' and 'B' in the following conversions.

\[\ce{CH3 - I ->[Alc. KCN][\Delta] A ->[Na/C2H5OH] B}\]


In aqueous phase the order of basic strength of alkylamine is ______.


Which of the following reagents is used in Mendius reduction reaction of alkyl cyanide?


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


Which of the following compounds is obtained when quaternary ammonium hydroxide is strongly heated?


Which of the following does NOT give carbylamine test?


Nitro compounds are reduced by iron scrap and hydrochloric acid to yield one of the following compounds:


For producing amines, the reaction of nitro compounds with iron scrap is preferred because:


Benzylamine may be alkylated as shown in the following equation:

\[\ce{C6H5CH2NH2 + R - X -> C6H5CH2NHR}\]

Which of the following alkylhalides is best suited for this reaction through SN1 mechanism?


The best reagent for converting 2–phenylpropanamide into 2-phenylpropanamine is ______.


Hoffmann Bromamide Degradation reaction is shown by ______.


Reduction of aromatic nitro compounds using \[\ce{Fe}\] and \[\ce{HCl}\] gives ______.


Reduction of nitrobenzene by which of the following reagent gives aniline?

(i) \[\ce{Sn/HCl}\]

(ii) \[\ce{Fe/HCl}\]

(iii) \[\ce{H2 - Pd}\]

(iv) \[\ce{Sn/NH4OH}\]


Which of the following amines can be prepared by Gabriel synthesis.

(i) Isobutyl amine

(ii) 2-Phenylethylamine

(iii) N-methylbenzylamine

(iv) Aniline


Identify A and B in the following reaction.


Describe Gabriel's phthalimide synthesis. (Give reaction)


Ethylamine can be prepared by the action of bromine and caustic potash on which compound?


A compound 'A' on reduction with iron scrap and hydrochloric acid gives compound 'B' with molecular formula C6H7N. Compound 'B' on reaction with CHCl3 and alcoholic KOH produces an obnoxious smell of carbylamine due to the formation of 'C'. Identify 'A', 'B' and 'C' and write the chemical reactions involved.


Give reasons for the following:

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


Which of the following reaction DOES NOT involve Hoffmann bromamide degradation?


Methyl amine on reaction with chloroform in the presence of NaOH gives ______.


The amine 'A' when treated with nitrous acid gives yellow oily substance. The amine A is ______.


Identify the product ‘C’ in the following reaction.

\[\ce{Aniline ->[(CH3CH)2O][Pyridine] A ->[Br2][CH3COOH] B ->[H^+ or OH^-] C}\]


Amides can be converted into amines by the reaction named ______.


Write short note on the following:

Ammonolysis


Write a short note on Ammonolysis.


Write short note on the following:

Ammonolysis


Write short note on the following.

Ammonolysis.


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