English

Why cannot aniline be prepared by Gabriel phthalimide synthesis?

Advertisements
Advertisements

Question

Why cannot aniline be prepared by Gabriel phthalimide synthesis?

Long Answer
Advertisements

Solution

  1. Gabriel phthalimide synthesis is used for the preparation of aliphatic primary amines.
  2. It involves the nucleophilic substitution of alkyl halides by the anion formed by the phthalimide.
  3. But aryl halides do not undergo nucleophilic substitution with the anion formed by the phthalimide.
    Hence, aniline cannot be prepared by Gabriel phthalimide synthesis.
shaalaa.com
  Is there an error in this question or solution?
Chapter 13: Amines - Long answer questions

APPEARS IN

RELATED QUESTIONS

Write a short note on Hoffmann bromamide degradation.


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:

Nitrobenzene to benzoic acid


Accomplish the following conversion:

Benzamide to toluene


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

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


Write the reaction of aliphatic primary amine with nitrous acid.


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


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


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


Answer in one sentence.

Which amide does produce ethanamine by Hofmann bromamide degradation reaction?


Answer the following

Write a reaction to convert acetic acid into methylamine.


Write reactions to prepare ethanamine from Acetonitrile.


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


Alkyl cyanides on reduction by sodium and ethanol give primary amines. This reaction is called as ____________.


Identify the major product (B).


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 \[\ce{(R - NH2)}\]?


Which of the following amines forms a clear solution when treated with benzene sulphonyl chloride and excess of potassium 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 reagents is used in Hofmann's elimination reaction of amines?


Which of the following does NOT give carbylamine test?


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


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:


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 ______.


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


Which of the following compounds is the weakest Brönsted base?


Among the following amines, the strongest Brönsted base is:


Which of the following reactions are correct?

(i)

(ii)

(iii)

(iv)


Identify A and B in the following reaction.


Write following conversions:

nitrobenzene `->` acetanilide


How will you carry out the following conversion?


How will you carry out the following conversions?


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.


Describe Gabriel's phthalimide synthesis. (Give reaction)


Account for the following:

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


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


The compound X is which of the following?

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


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


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 compound gives pink colour on reaction with phthalic anhydride in cone. H2SO4 followed by treatment with NaOH?


Write short note on the following:

Ammonolysis


Write short note on the following:

Ammonolysis


Write the name of reduction product formed when ethyl cyanide is treated with sodium and alcohol.


Write a short note on Ammonolysis.


Write short notes on the following:

Ammonolysis 


Write a short note on the following:

Ammonolysis


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×