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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
In the following
The compound ‘B’ is _______.
(A) Propan–1–amine
(B) Propan–2–amine
(C) Isopropylamine
(D) Dimethylamine
Choose the most correct option.
Which type of amine does produce N2 when treated with HNO2?
What is the action of nitrous acid on the following compounds?
Isopropyl amine
How are amines classified depending on the functional group? Give one example of each class of amines.
Which of the following amines is most basic in nature in aqueous phase?
\[\ce{C6H5NO2 ->[Fe/HCl] A ->[NaNO2/HCl][273 K] B ->[H2O][283 K] C}\] ‘C’ is:
Which of the following amines does not undergo acetylation?
Write a short note on the following.
Schotten-Baumann reaction
Write a short note on the following.
Mustard oil reaction
Arrange the following.
In increasing order of boiling point C6H5OH, (CH3)2NH, C2H5NH2.
Arrange the following.
In decreasing order of basic strength
How will you prepare propan-1-amine from 1-nitropropane?
(C2H5)2CHNH2. The following amine can be classified as:
The following amine can be classified as:
Complete the following reaction.
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:
(C2H5)2CHNH2
Which among the following is the strongest Bronsted base?
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:
Among the following, which is the strongest base?
Arrange the increasing order of solubility in water.
\[\ce{C2H5Cl, C2H5NH2, C2H5OH}\]
Write short note on the following.
Ammonolysis
Define Amines.
Write short note on the following.
Ammonolysis
Write short note on the following:
Ammonolysis
Write a short note on the following.
Ammonolysis
