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what are the IUPAC list for nomenclature of organic compounds? |
For nomenclature purposes, a structure containing at least one carbon atom is considered to be an organic compound. The formation of a systematic name for an organic compound requires selection and then naming of a parent structure. This basic name may then be modified by prefixes, infixes, and, in the case of a parent hydride, suffixes, which convey precisely the structural changes required to generate the compound in question from the parent structure. In contrast to such systematic names, there are traditional names which are widely used in industry and academic circles. Examples are acetic acid, benzene and pyridine. Therefore, when they meet the requirements of utility and when they fit into the general pattern of systematic nomenclature, these traditional names are retained. The systematic IUPAC name of an organic compound consists of four parts. Root word Suffix(es) and Prefix(es) infix IUPAC NAME Number of carbon atoms in the parent chain Root word 1 Meth 2 Eth 3 Prop 4 But 5 Pent 6 Hex STEPS INVOLVED IN GIVING IUPAC NAME 1) The first step in giving IUPAC name to an organic compound is to select the parent chain and assign a root word. 2) Next, the appropriate primary prefix(es) must be added to the root word to indicate the saturation or unsaturation. 3) If the molecule contains functional group or groups, a secondary suffix must be added to indicate the main functional group. This is optional and not necessary if the molecule contains no functional group. 4) Prefix the root word with the infix "cyclo" if the parent chain is cyclic; or with the infix "spiro" if it is a spiro compound; or with the infix "bicyclo" if the compound is bicyclic. 5) Finally add prefix(es) to the name if there are side chains or substituents on the parent chain. |