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Question
Write a short note on the following:
Gabriel phthalimide synthesis
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Solution
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.
RELATED QUESTIONS
Isobutylamine is an example of ______.
Choose the most correct option.
Which type of amine does produce N2 when treated with HNO2?
Choose the most correct option.
Carbylamine test is given by ____________.
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Reason: Bromine catalyses hydrolysis of acetamide.
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Write a short note on the following.
Carbylamine reaction
Account for the following.
Gabriel phthalimide synthesis is preferred for synthesising primary amines.
Arrange the following.
In decreasing order of the pKb values C2H5NH2, C6H5NHCH3, (C2H)2NH and CH3NH2.
Arrange the following.
In decreasing order of basic strength
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(C2H5)2CHNH2. The following amine can be classified as:
The main product is formed by treating an alkyl or benzyl halide with excess ammonia ____________.
Classify the following amine as primary, secondary or tertiary:
Classify the following amine as primary, secondary or tertiary:
(C2H5)2CHNH2
Among the following, which is the strongest base?
Write short notes on the following
Ammonolysis
Name the distinguishing test for differentiating 1° amine from 2° and 3° amine.
Write a short note on the following.
Ammonolysis
Write short note on the following:
Ammonolysis
Write a short note on the following.
Ammonolysis
