English

How are amines classified?

Advertisements
Advertisements

Question

How are amines classified?

Answer in Brief
Advertisements

Solution

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.

shaalaa.com
  Is there an error in this question or solution?
Chapter 13: Amines - Exercises [Page 297]

APPEARS IN

Balbharati Chemistry [English] Standard 12 Maharashtra State Board
Chapter 13 Amines
Exercises | Q 4.2 | Page 297

RELATED QUESTIONS

Choose the most correct option.

The hybridisation of nitrogen in primary amine is ____________.


Isobutylamine is an example of ______.


Choose the most correct option.

Which type of amine does produce N2 when treated with HNO2?


What are amines?


Write the number of moles of ethanoyl chloride required for complete acylation of N, N-dimethylaniline.


Which of the following amines is most basic in nature in aqueous phase?


\[\ce{Aniline + benzoylchloride ->[NaOH] C6H5 - NH - COC6H5}\] 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 ____________.


Which of the following amines does not undergo acetylation?


Which one of the following is most basic?


Write a short note on the following.

Ammonolysis


How will you distinguish between primary secondary and tertiary aliphatic amines?


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.


Account for the following.

Although amino group is o- and p-directing in aromatic electrophilic substitution reactions, aniline on nitration gives a substantial amount of m-nitroaniline.


Arrange the following.

In decreasing order of basic strength in gas phase (C2H5)NH2, (C2H5)NH, (C2H5)3N and NH3.


Arrange the following.

In increasing order of boiling point C6H5OH, (CH3)2NH, C2H5NH2.


Arrange the following.

Increasing order of basic strength C6H5NH2, C6H5N(CH3)2, (C2H5)2NH and CH3NH2.


Arrange the following.

In decreasing order of basic strength


How will you prepare propan-1-amine from butane nitrile?


How will you prepare propan-1-amine from propanamide?


How will you prepare propan-1-amine from 1-nitropropane?


Identify A, B and C.

\[\ce{CH3 - NO2 ->[LiAlH4] A ->[2CH3CH2Br] B ->[H2SO4] C}\]


How will you convert diethylamine into N, N-diethyl acetamide?


(C2H5)2CHNH2. The following amine can be classified as:


The following amine can be classified as (C2H5)2NH:


The following amine can be classified as:


Arrange the following in the increasing order of their basic strength:

C2H5NH2, C6H5NH2, (C2H5)2NH


\[\begin{array}{cc}
\ce{O}\phantom{.........}\\
||\phantom{.........}\\
\ce{H - \underset{(A)}{C} - NH - CH3}
\end{array}\]

and 

\[\begin{array}{cc}
\ce{O}\\
||\\
\ce{CH3 - \underset{(B)}{C} - NH2}
\end{array}\]

are which type of isomers?


Classify the following amine as primary, secondary or tertiary:


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: 


Write a short note on the following.

Ammonolysis


Write short note on the following.

Ammonolysis


Define Amines.


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


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×