--%>
Assignment Help - homework help

What are aliphatic amines and its nomenclature?

In common system, the aliphatic amines are named by using prefix for alkyl group followed by the word amine.

In case of mixed amines, the name of alkyl groups are arranged in alphabetical order. This is followed by the word amine. However, for simple secondary or tertiary amines another prefix di or tri is added before the name of the alkyl group.

There is yet another system of naming amines according to which they are called aminoalkanes. In this system, the secondary or tertiary amines are named as N-alkylaminoalkanes. In this case, the smaller alkyl groups are taken as subsequent on nitrogen atom of primary amine. For example,

1264_aliphatic amines.png  

In IUPAC system, the amines are considered to be amino derivatives of corresponding alkanes. Therefore, they are called alkanamines. These names are obtained by replacing e from the name of the parent alkane with suffix amine. The secondary and tertiary amines are, however, named as N-substituted derivatives of largest group of primary amines, i.e. N-Alkylalkanamines. The common and IUPAC names of some simple amines are given below in tabular form.

Amine Common Name IUPAC Name
1° Amines    
CH3NH3 Methyl amine Methanamine
CH3CH2NH2 Ethyl amine Ethanamine
CH3CH2CH2NH2 n-Propyl amine Propan-1-amine
(CH3)2CHNH2 Iso-Propyl amine Propan-2-amine
2° Amines    
CH3 - NH - CH3 Dimethyl amine N-Methyl-methanamine
CH3 - NH - C2H5 Ethyl methyl amine N-Methyl-ethanamine
3° Amines    
1097_aliphatic amines1.png Tri-methyl amine N, N-Dimethyl-methanamine
1944_aliphatic amines2.png Ethyl methyl amine N-Ethyl-N-methyl-propanamine
    
For compounds containing more than one amino group, a prefix di, tri, etc. is added before the suffix amine and the terminal e of the name of the hydrocarbon part is retained.

1616_aliphatic amines3.png  

 

 

 

 

 

   Related Questions in Chemistry

  • Q : Vapour pressure related question Help

    Help me to solve this question. Which of the following is incorrect: (a) Relative lowering of vapour pressure is independent (b)The vapour pressure is a colligative property (c)Vapour pressure of a solution is lower than the vapour pressure of the solvent (d)The

    		•
  • Q : Question based on lowering of vapour

    Choose the right answer from following. The relative lowering of vapour pressure produced by dissolving 71.5 g of a substance in 1000 g of water is 0.00713. The molecular weight of the substance will be:  (a) 18.0 (b) 342 (c) 60 (d) 180

    		•
  • Q : Describe characteristics of halides and

    Halides characteristics

    		•
  • Q : Concentration of Sodium chloride

    Provide solution of this question. If 25 ml of 0.25 M NaCl solution is diluted with water to a volume of 500ml the new concentration of the solution is : (a) 0.167 M (b) 0.0125 M (c) 0.833 M (d) 0.0167 M

    		•
  • Q : Atmospheric pressure Give me answer of

    Give me answer of this question. The atmospheric pressure is sum of the: (a) Pressure of the biomolecules (b) Vapour pressure of atmospheric constituents (c) Vapour pressure of chemicals and vapour pressure of volatile (d) Pressure created on to atmospheric molecules

    		•
  • Q : Describe properties of carboxylic acids.

    1. Physical state: the first three aliphatic acids are colourless liquids with pungent smell. The next six are oily liquids with an odour of rancid butter while the higher members are colourless, odourless waxy solids. Benzoic acid is referred to

    		•
  • Q : Problem on preparing of a solution Give

    Give me answer of this question. How many grams of CH3OH should be added to water to prepare 150 solution of@M CH3 OH: (a) 9.6 (b) 2.4 (c) 9.6x 103 (d) 2.4 x103

    		•
  • Q : Define Bond Energies - Bond Charges

    Energy changes in some chemical reactions can be used to deduce the energies of chemical bonds. Our understanding of the molecular basis of thermodynamic properties is extended when we ask why the enthalpy change for a reaction is what it is. We deduce,

    		•
  • Q : Basicity order order of decreasing

    order of decreasing basicity of urea and its substituents

    		•
  • Q : Molar and Volumetric flow rate problem

    Cyclohexane (C6H12) is produced by mixing Benzene and hydrogen. A process including a reactor, separator, and recycle stream is used to produce Cyclohexane. The fresh feed contains 260L/min C6H6 with 950 L/min of H2

    		•