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InterviewSolution
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81.State the rules for the nomenclature of haloarenes (Aryl halides). |
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Answer» In order to write the IUPAC name of a given organic compound, we need to identify − Parent chain (longest hydrocarbon). Principal functional group (suffix) Substituents and its position(s) (prefix Rule of nomenclature Find the longest carbon chain. Number the longest carbon chain such that thecarbonatom(s) to which the halogen(s) is/are attached get the lowest number(s). Multiple halogen atoms are labeled with the Greek numerical prefixes such as di, tri, tetra, to denote the number of identical halogen atoms attached to a carbon atom. If more than onehalogen atoms attached to the same carbon atom, numeral is repeated that much time. In case, different types of halogens are attached, they are namedalphabetically. Position of halogen atom is indicated by writing the position and name of the halogen just before the name of the parent hydrocarbon. |
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