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प्रश्न
How are amines classified?
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उत्तर
Classification of Amines:
i. Amines are classified as primary (1°), secondary (2°), and tertiary (3°) amines.
ii. Their structures are obtained in a simple way by replacing one, two, or three hydrogen atoms of NH3 molecule by alkyl/aryl groups.
iii. Secondary and tertiary amines are further classified as simple or symmetrical amines and mixed or unsymmetrical amines.
iv. When all the alkyl or aryl groups on nitrogen are the same, it is a simple amine. If these groups are different, then the amine is a mixed amine.
v. Amines are also divided into two major classes, namely, aliphatic and aromatic amines on the basis of the nature of the groups attached to the nitrogen atom.
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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.
The hybridisation of nitrogen in primary amine is ____________.
Choose the most correct option.
Which type of amine does produce N2 when treated with HNO2?
Choose the most correct option.
Identify ‘B’ in the following reactions
\[\ce{CH3 - C ≡ N ->[Na/C2H5OH] A ->[NaNO2/dilHCl]B}\]
Write the number of moles of ethanoyl chloride required for complete acylation of N, N-dimethylaniline.
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.
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.
The product formed by the reaction an aldehyde with a primary amine ____________.
The order of basic strength for methyl substituted amines in aqueous solution is ____________.
\[\ce{C6H5NO2 ->[Fe/HCl] A ->[NaNO2/HCl][273 K] B ->[H2O][283 K] C}\] ‘C’ is:
IUPAC name for the amine is:
\[\begin{array}{cc}
\phantom{.}\ce{CH3}\\
|\phantom{..}\\
\ce{CH3 - N - C - CH2 - CH3}\\
\phantom{.}|\phantom{.....}|\phantom{........}\\
\phantom{}\ce{CH3}\phantom{..}\ce{C2H5}\phantom{....}
\end{array}\]
How will you convert nitrobenzene into m-nitro aniline?
Write a short note on the following:
Gabriel phthalimide synthesis
Write a short note on the following.
Schotten-Baumann reaction
Account for the following.
pKb of aniline is more than that of methylamine.
Account for the following.
Gabriel phthalimide synthesis is preferred for synthesising primary amines.
Arrange the following:
In increasing order of solubility in water:
C6H5NH2, (C2H5)2NH, C2H5NH2
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
How will you prepare propan-1-amine from butane nitrile?
Identify A, B and C.
\[\ce{CH3 - NO2 ->[LiAlH4] A ->[2CH3CH2Br] B ->[H2SO4] C}\]
How will you convert diethylamine into N-nitrosodiethylamine?
The following amine can be classified as:
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:
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
Write a short note on the following.
Ammonolysis
Define Amines.
Write a short note on the following.
Ammonolysis
Account for the following:
Aniline does not undergo Friedel-Crafts reaction.
Write short note on the following.
Ammonolysis
Write short note on Ammonolysis.
Write a short note on the following.
Ammonolysis
Write a short note on the following.
Ammonolysis
