English

Answer the following Identify A and B in the following reactions. CX6HX5CHX2Br→KCNalco⋅A→Na/ethanolB⋅

Advertisements
Advertisements

Question

Answer the following

Identify A and B in the following reactions.

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

One Line Answer
Advertisements

Solution

\[\ce{\underset{\text{Benzyl bromide}}{C6H5 - CH2 - Br} ->[alcoholic KCN]\underset{\text{Phenylacetonitrile} (A)}{C6H5 - CH2 - C ≡ N} ->[Na/ethanol]\underset{\text{2-Phenylethylamine} (B)}{C6H5 - CH2 - CH2 - NH2}}\]

shaalaa.com
  Is there an error in this question or solution?
Chapter 13: Amines - Exercises [Page 297]

APPEARS IN

Balbharati Chemistry [English] Standard 12 Maharashtra State Board
Chapter 13 Amines
Exercises | Q 3.01 | Page 297

RELATED QUESTIONS

How is ethyl amine prepared from methyl iodide?


Write a short note on Hoffmann bromamide degradation.


Write the chemical equation involved in the following reaction:

Hoffmann-bromamide degradation reaction


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 :


Write a short note on the following:

Hoffmann’s bromamide reaction


Accomplish the following conversion:

Benzamide to toluene


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

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


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

\[\ce{C6H5NO2 ->[Fe/HCl] A ->[NaNO2 + HCl][273 K] B ->[H2O/H+][\Delta] C}\]


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

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


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


Account for the following:
Gabriel phthalimide synthesis is not preferred for preparing aromatic primary amines.


Answer in one sentence.

Predict the product of the following reaction.

\[\ce{Nitrobenzene ->[Sn/conc.HCl]?}\]


Answer the following

Explain the ammonolysis of alkyl halides.


The following amines is the product of Gabriel phthalimide synthesis.


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


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.


Why cannot aniline be prepared by Gabriel phthalimide synthesis?


Explain the following reaction with a suitable example.

Hofmann elimination reaction


Identify the product 'A' in the following reaction.

\[\ce{Aniline ->[(CH3CO)2O][Pyridine] A}\]


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


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.

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


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?


Which of the following does NOT give carbylamine test?


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


The best reagent for converting, 2-phenylpropanamide into 1- phenylethanamine is ______.


Among the following amines, the strongest Brönsted base is:


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.\[\ce{H2 SO4}\].


What is the best reagent to convert nitrile to primary amine?


Suggest a route by which the following conversion can be accomplished.


How will you carry out the following conversions?


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.


The Gabriels' phthalimide synthesis is used in the synthesis of


A primary amine is formed by an amide on treatment with bromine and alkali. The primary amine has


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


Reduction of nitro alkanes yields which compound?


In the given reaction what is the X?

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


Acetamide and ethyl amide can be distinguished by reacting with.


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.


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


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.


Which of the following statement(s) is/are incorrect in case of Hofmann bromamide degradation?


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

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


Write short note on the following:

Ammonolysis


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.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×