138
Question
Name the compounds whose line formulae are given below:
Name the compounds whose line formulae are given below:
Name the compounds whose line formulae are given below:
Name the compounds whose line formulae are given below:
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Solution
A) Rules of IUPAC nomenclature
● Parent chain will be the longest carbon chain containing carbonyl and alkene functional groups.
● According to IUPAC, the carbonyl group is given higher priority over double bonds.
● The suffix ‘ane′ is replaced by ‘en−one′.
Identifying and numbering of parent chain
IUPAC nomenclature of the compound
3−Ethyl−4−methylhept−5−en−2−one
B) Rules of IUPAC nomenclature
• Parent chain will be the longest carbon chain containing alkene functional groups.
• Cyclohexene ring will be numbered starting from alkene carbon in such a way that nitro group gets the lowest possible position.
Identifying and numbering of parent chain
IUPAC nomenclature of the compound
3−Nitrocyclohex−1−ene
The IUPAC name of the above compound is 3−Nitrocyclohex−1−ene.
● Parent chain will be the longest carbon chain containing carbonyl and alkene functional groups.
● According to IUPAC, the carbonyl group is given higher priority over double bonds.
● The suffix ‘ane′ is replaced by ‘en−one′.
Identifying and numbering of parent chain
IUPAC nomenclature of the compound
3−Ethyl−4−methylhept−5−en−2−one
B) Rules of IUPAC nomenclature
• Parent chain will be the longest carbon chain containing alkene functional groups.
• Cyclohexene ring will be numbered starting from alkene carbon in such a way that nitro group gets the lowest possible position.
Identifying and numbering of parent chain
IUPAC nomenclature of the compound
3−Nitrocyclohex−1−ene
The IUPAC name of the above compound is 3−Nitrocyclohex−1−ene.
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