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प्रश्न
Write a short note on the following:
Gabriel phthalimide synthesis
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उत्तर
Gabriel synthesis is used for the preparation of primary amines. Phthalimide, on treatment with ethanolic potassium hydroxide, forms potassium salt of phthalimide, which on heating with alkyl halide followed by alkaline hydrolysis, produces the corresponding primary amine. Aromatic primary amines cannot be prepared by this method because aryl halides do not undergo nucleophilic substitution with the anion formed by phthalimide.
संबंधित प्रश्न
Classify the following amine as primary, secondary or tertiary:
(C2H5)2NH
Choose the most correct option.
The hybridisation of nitrogen in primary amine is ____________.
Isobutylamine is an example of ______.
How are amines classified?
Write the number of moles of ethanoyl chloride required for complete acylation of N, N-dimethylaniline.
A tertiary amine is an organic compound ____________.
Which of the following amines is most basic in nature in aqueous phase?
Assertion: Acetamide on reaction with KOH and bromine gives acetic acid.
Reason: Bromine catalyses hydrolysis of acetamide.
\[\ce{Aniline + benzoylchloride ->[NaOH] C6H5 - NH - COC6H5}\] this reaction is known as ____________.
When aniline reacts with acetic anhydride the product formed is ____________.
The order of basic strength for methyl substituted amines in aqueous solution is ____________.
IUPAC name for the amine is:
\[\begin{array}{cc}
\phantom{.}\ce{CH3}\\
|\phantom{..}\\
\ce{CH3 - N - C - CH2 - CH3}\\
\phantom{.}|\phantom{.....}|\phantom{........}\\
\phantom{}\ce{CH3}\phantom{..}\ce{C2H5}\phantom{....}
\end{array}\]
Write a short note on the following.
Ammonolysis
Write a short note on the following.
Mustard oil reaction
Account for the following.
pKb of aniline is more than that of methylamine.
Arrange the following.
In decreasing order of basic strength in gas phase (C2H5)NH2, (C2H5)NH, (C2H5)3N and NH3.
Arrange the following.
In decreasing order of basic strength
How will you convert diethylamine into N, N-diethyl acetamide?
The following amine can be classified as (C2H5)2NH:
Arrange the following in the increasing order of their basic strength:
C2H5NH2, C6H5NH2, (C2H5)2NH
The reaction of NHO2 with 'A' gives quartering ammonium salt. A is which of the following?
Classify the following amine as primary, secondary or tertiary:
Classify the following amine as primary, secondary or tertiary:
(C2H5)2CHNH2
Assertion A: Aniline on nitration yields ortho, meta and para nitro derivatives of aniline.
Reason R: Nitrating mixture is a storng acidic mixture.
In the light of the above statements, choose the correct answer from the options given below:
Write short notes on the following
Ammonolysis
Name the distinguishing test for differentiating 1° amine from 2° and 3° amine.
Write short note on Ammonolysis.
Write a short note on the following.
Ammonolysis
Write a short note on the following.
Ammonolysis
