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

Give the structures of A, B and C in the following reaction: CH3CH2Br KCN-> A LiAlH4->B HNO2->0°C C - Chemistry

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प्रश्न

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

\[\ce{CH3CH2Br ->[KCN] A ->[LiAlH4] B ->[HNO2][0^\circ C] C}\]

रासायनिक समीकरणे/रचना

उत्तर

\[\ce{\underset{Bromoethane}{CH3CH2Br} ->[KCN] \underset{\underset{(A)}{{Cyanoethane}}}{CH3CH2CN} ->[LiAlH4] \underset{\underset{(B)}{Propan-1-amine}}{CH3CH2CH2NH2} ->[HNO2][0^\circ C] \underset{\underset{(C)}{Propan-1-ol}}{CH3CH2CH2OH}}\]

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पाठ 13: Amines - Exercises [पृष्ठ ४०१]

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एनसीईआरटी Chemistry [English] Class 12
पाठ 13 Amines
Exercises | Q 9.3 | पृष्ठ ४०१

संबंधित प्रश्‍न

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


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


The following amines is the product of Gabriel phthalimide synthesis.


Explain Hoffmann’s exhaustive alkylation with suitable reactions.


Why cannot aniline be prepared by Gabriel phthalimide synthesis?


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


In order to prepare a 1° amine from an alkyl halide with simultaneous addition of one \[\ce{CH2}\] group in the carbon chain, the reagent used as source of nitrogen is ______.


The source of nitrogen in Gabriel synthesis of amines is ______.


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


How will you carry out the following conversions?


Assertion: Hoffmann’s bromamide reaction is given by primary amines.

Reason: Primary amines are more basic than secondary amines.


Assertion: Only a small amount of \[\ce{HCl}\] is required in the reduction of nitro compounds with iron scrap and \[\ce{HCl}\] in the presence of steam.

Reason: \[\ce{FeCl2}\] formed gets hydrolysed to release \[\ce{HCl}\] during the reaction.


Account for the following:

Aniline cannot be prepared by the ammonolysis of chlorobenzene under normal conditions.


The compound X is which of the following?

\[\ce{CH3CN ->[Na + C2H5OH] x}\]


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.


Identify A and B in the following reaction.

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


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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