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Last updated date: 01st Dec 2023
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MVSAT Dec 2023

Write the IUPAC name of the following compound?
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Hint: We must have to know that the full form of IUPAC is the International Union of Pure and Applied Chemistry. It is a World Wide organisation for the nomenclature of the new elements in the periodic table and chemical molecules. The IUPAC has certain rules and regulations for the naming of the organic compound. In that method only we named the organic molecules in World level. The naming of any organic molecule depends on the parent saturated hydrocarbon.

Complete answer:
The given structure is
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The rules for naming structure is,
First to calculate the number of carbon atoms in the given ring structure. According to that count we consider our parent hydrocarbon.
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There are six carbon atoms present in the given ring structure. The number of carbon atoms with six hydrocarbons is hexane. But it is the closed ring structure that is the reason we insert cyclo term in front of the parent hydrocarbon. Hence, the parent name of the given cyclic structure is cyclohexane.
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But in a given structure ring having one double bond. If double present in the structure means it comes under alkene family. Hence, the suffix of the parent name changed to cyclohexene.
The nitro is the substituent group in the given structure. The number of the substituent in two ways one is clockwise and other is anti-clockwise. Here, taken clockwise it will come in minimum number for the substituent group in the given structure.
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Hence, the IUPAC name of the given structure is 2-nitrocyclohexene.

We have to remember that the functional group of the molecule is very important for the naming time. If one molecule having more than one functional group means some priority list is also provided from IUPAC. If the number of substituent and functional group is dependent on the minimum number will come from the left side or right of the terminal carbon atom in the chain. If it is a cyclic structure, it means depending on the number we choose clockwise numbering or anti-clockwise numbering in the structure. The main chain is dependent on the large number carbon atom chain in the molecule.