मराठी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Best method for preparing primary amines from alkyl halides without changing the number of carbon atoms in the chain is ______.

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प्रश्न

Best method for preparing primary amines from alkyl halides without changing the number of carbon atoms in the chain is ______.

पर्याय

  • Hoffmann Bromamide reaction

  • Gabriel phthalimide synthesis

  • Sandmeyer reaction

  • Reaction with \[\ce{NH3}\]

MCQ
रिकाम्या जागा भरा
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उत्तर

Best method for preparing primary amines from alkyl halides without changing the number of carbon atoms in the chain is Gabriel phthalimide synthesis.

Explanation:

Gabriel phthalimide synthesis is used to get primary amine from alkyl halide without any change in number of carbon atoms.

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पाठ 13: Amines - Multiple Choice Questions (Type - I) [पृष्ठ १८४]

APPEARS IN

एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
पाठ 13 Amines
Multiple Choice Questions (Type - I) | Q 21 | पृष्ठ १८४

संबंधित प्रश्‍न

Accomplish the following conversion:

Benzyl chloride to 2-phenylethanamine


Accomplish the following conversion:

Benzamide to toluene


Write the reaction of aromatic primary amine with nitrous acid.


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


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


Answer the following

Identify A and B in the following reactions.

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


Answer the following

Explain Gabriel phthalimide synthesis.


Answer the following

Explain the ammonolysis of alkyl halides.


Mendius reaction is used to convert _____________


Name the process of breaking C-X bond by ammonia in preparation of amines.


Explain Hoffmann’s exhaustive alkylation with suitable reactions.


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, ____________.


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


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


Hoffmann Bromamide Degradation reaction is shown by ______.


Under which of the following reaction conditions, aniline gives p-nitro derivative as the major product?

(i) Acetyl chloride/pyridine followed by reaction with conc.\[\ce{H2SO4 }\] + conc. \[\ce{HNO3}\].

(ii) Acetic anyhdride/pyridine followed by conc.\[\ce{H2SO4}\] + conc.\[\ce{HNO3}\].

(iii) Dil. HCl followed by reaction with conc.\[\ce{H2SO4}\] + conc.\[\ce{HNO3}\].

(iv) Reaction with conc.\[\ce{HNO3}\] + conc.\[\ce{H2 SO4}\].


Acetamide and ethyl amide can be distinguished by reacting with.


  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.


Write a short note on the following:

Ammonolysis


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