SATHEE: Nomenclature

Nomenclature

Points to remember in Nomenclature

Examples of Compound containing different functional groups with common / trival names.

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Secondary suffix of some common functional groups (IUPAC)

A secondary suffix is added to the primary suffix to indicate the nature of the functional group present in the organic compounds. Secondary suffix of important functional groups are given below in their decreasing order of seniority.

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IUPAC system of nomenclature

PYQ-2024-Genral_Organic_Chemistry-Q43, PYQ-2024-Genral_Organic_Chemistry-Q41, PYQ-2024-Genral_Organic_Chemistry-Q36, PYQ-2024-Genral_Organic_Chemistry-Q32, PYQ-2024-Genral_Organic_Chemistry-Q27, PYQ-2024-Genral_Organic_Chemistry-Q17, PYQ-2024-Genral_Organic_Chemistry-Q13 PYQ-2024-Genral_Organic_Chemistry-Q1

The IUPAC name of any organic compound consists of maximum five parts in the following sequence.

Secondary prefix + Primary prefix + Word root + Primary suffix + Secondary suffix

The following examples illustrate the use of word root, primary suffix and secondary suffix in naming of organic compounds.

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The following examples illustrate the use of word root, primary prefix and secondary prefix in naming of organic compounds.

Ex.(i)

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(ii)

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(iii)

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Position of double bond will be indicated as no. 1, Hence name will be 3Methyl-3-propylhex-1-ene

Allyl halides

PYQ-2024-Genral_Organic_Chemistry-Q33

These are the compounds where the halogen group is attached to a hybridised carbon atom next to the carbon which is already in a double bond with another carbon atom. In both S N 1 and S N 2 mechanisms, these halides are reactive.

Vinyl halide

PYQ-2024-Genral_Organic_Chemistry-Q31

A vinyl halide is a compound with the formula CH2=CHX (X = halide). The term vinyl is often used to describe any alkenyl group. For this reason, alkenyl halides with the formula RCH=CHX are sometimes called vinyl halides.