Question

The various steps for writing IUPAC names of an organic compound are given below.
Arrange the steps in the correct order.
(a) Numbering of carbon chain
(b) identification of primary suffix
(c) Selection of the longest chain
(d) Identification of secondary suffix
(e) Identification of number and nature of alkyl groups attached to carbon chain
A.cabde
B.caebd
C.cbdae
D.acbde

Answer 1

In order to name organic compounds, First, we must memorize a few basic names. These names are within the discussion of naming alkanes. Generally, the name reflects the number of carbons in what you have assigned to be the parent chain. The suffix of the name reflects the type of functional group present on the parent chain. Other groups, attached to the parent chain are called substituents.

Complete step by step answer:
1.Selection of the longest chain: The longest, most substituted carbon chain containing a functional group is chosen. For example: It contains two functional groups, bromine and chlorine, and one substitute, the methyl group. The longest carbon chain consists of seven carbons.
2.Identification of primary suffix: Primary suffix indicates the degree of saturation (single bond) or unsaturation (double or triple bond) in the carbon chain. For single bonded carbon atoms, the primary suffix is “ane”.
3.Identification of secondary suffix: Secondary suffix indicates the functional group present in the molecule, depending on the number of occurrences of the same functional group in a compound, the words like di, tri, tetra etc., are prefixed to the secondary suffix.
4.Numbering of carbon chain: Carbon atoms are numbered from the reactive end of the molecule, the CHO (aldehyde) or “C” double bonded “O” (carbonyl) end of the molecule. 5.Then, each carbon atom is numbered in order through the end of the chain.
6.Identification of number and nature of alkyl groups attached to a carbon chain: The alkyl group is a type of functional group that has a carbon and hydrogen atom present in its structure.

Therefore, the correct answer is Option (C).

Note: The IUPAC nomenclature of organic chemistry is a method of naming of organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry.