Please describe the iupac rules that lead to this name What is the IUPAC name for...

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What is the IUPAC name for the following molecule? NO2 Selected Answer: Answers: d. 5-ethyl-2-nitrohept-4-ene a. 3-ethyl-6-ni

Please describe the iupac rules that lead to this name

Answer 1

Answer #1

Rule #1 The parent chain is the one containing the maximum number of carbon atoms. here that chain is with 7 carbon atoms. Hence the root word is hept. Since it is an alkene, the suffix is 'ene'
Rule #2: The parent chain is numbered so that the multiple bonds (Here the double bond) have the lowest numbers. So, the double-bond will be given number 3 rather than number 4
Rule #3: Unsaturation has priority over nitro group(-NO2) and alkyl groups. Note that nitro group is always a prefix.
Rule#4: While writing the name, the substituents ethyl starts with e and nitro starts with n, so, the substituent are written alphabetically, so ethyl comes first and than the nitro group.

So, the name is : 3-ethyl-6-nitrohept-3-ene

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Answer 2

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