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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

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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
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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 9: Amines - Exercises [पृष्ठ २७९]

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एनसीईआरटी Chemistry Part 1 and 2 [English] Class 12
पाठ 9 Amines
Exercises | Q 9.9 (iii) | पृष्ठ २७९

संबंधित प्रश्‍न

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


Accomplish the following conversion:

Nitrobenzene to benzoic acid


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

\[\ce{C6H5N2Cl ->[CuCN] A ->[H2O/H+] B ->[NH3][\Delta] C}\]


Why cannot aromatic primary amines be prepared by Gabriel phthalimide synthesis?


 Write structures of compounds A and B in each of the following reactions:


Answer the following

Explain Gabriel phthalimide synthesis.


Identify compound 'B' in following series of reactions?

\[\ce{Acetonitrile ->[Na/alcohol] A ->[NaNO2/dil.HCI] B}\]


Identify the product obtained when benzyl chloride undergoes ammonolysis in presence of excess ammonia followed by the reaction with two moles of methyl iodide.


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


Given below are two statements labelled as Assertion (A) and Reason (R).

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

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

Select the most appropriate answer from the options given below:


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?


Which of the following methods of preparation of amines will give same number of carbon atoms in the chain of amines as in the reactant?


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

(i) Isobutyl amine

(ii) 2-Phenylethylamine

(iii) N-methylbenzylamine

(iv) Aniline


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.


Identify the compo ds A and B in the following reactions:

\[\ce{A ->[Nitrating mixture] B ->[(i) Sn/cone. HCI][(ii) NaOH] Aniline}\]


Write a short note on the following:

Ammonolysis


Write a short note on Ammonolysis.


Assertion: Amimonolysis of alkyl halides involves the reaction between alkyl halides and alcoholic ammonia.

Reason: Ammonolysis of alkyl halides produces secondary amines only.


Write short notes on the following:

Ammonolysis 


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