![]() Now add them to makeup the IUPAC name of the compound. The IUPAC name of the following compound (3-methylbutan-2-ol) is arrived in steps mentionedĪre there any side chains or substituents? The infix "bicyclo" if the compound is bicyclic.ĥ) Finally add prefix(es) to the IUPAC name, if there are side chains or substituents on the parent chain.Į.g. This is optional and not necessary if the molecule contains no functional group.Ĥ) Prefix the root word with the infix "cyclo" if the parent chain isĬyclic or with the infix "spiro" if it is a spiro compound or with STEPS INVOLVED INġ) The first step in giving IUPAC name to an organic compound is to select the parent chain and assign aĢ) Next, the appropriate primary suffix(es) must be added to the root word to indicate the saturation or unsaturation.ģ) If the molecule contains functional group or groups, a secondary suffix must be added to indicate the main functional group. The infixes are some times called as primary prefixes. * The "Bicyclo" infix is used to indicate the bicyclic nature of * The "Spiro" infix is used to indicate the spiro compound. * The "Cyclo" infix is used to indicate the cyclic nature of the Spiro, bicyclo, are added between the prefix(es) and root word in the IUPAC They have lower priority than double and triple bonds. Remember that the alkyl groups along with halo, nitro and alkoxy have (the prefixes for functional groups are already given) The prefixes used for some common side chains and substituents are shown below. Prefix may precede the word root or the infix of IUPAC name. The prefix is used to indicate the side chains, substituents and low priority functional groups (which are considered as substituents). Note: This is not the complete reference. When carbon of the functional group is NOT part of the parent chain When carbon of the functional group is part of the parent chain Nomenclature of cyclic organic compounds.This is more than suffice to all the students at various levels of their This is not an exhaustive reference to IUPAC nomenclature. AĬoncise and unified approach is followed to help in giving IUPAC names to almost all types On this page, I have given a logical introduction to IUPAC nomenclature. IUPAC name to an organic compound just by looking at its structure and it is also possible to write the structure of organic compound by following the IUPAC name for that compound. By using this system, it is possible to give a systematic The IUPAC system of nomenclature is a set of logical rules framed which are mainly aimed at giving an unambiguous name to an organic compound. This leads to setting up a system of nomenclature by "International Union of Pure and Applied Chemistry, IUPAC". However, organic chemists realized the need for a systematic naming for organic compounds since a large number of organic compounds are synthesized in due course. In the earlier days, the conventional names for organic compounds were mainly derived from the source of occurrence IUPAC NOMENCLATURE RULES-IUPAC NAME-ORGANIC CHEMISTRY
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