(a)
Interpretation:
Interpret the IUPAC name for given structure.
Concept Introduction:
The naming of the
- Longest carbon chain need to be identify such as
If carbon chain contains 2 carbon then it is known as ‘eth’
If carbon chain contains 3 carbon then it is known as ‘prop’
If carbon chain contains 4 carbon then it is known as ‘but’
If carbon chain contains 5 carbon then it is known as ‘pent’
If carbon chain contains 6 carbon then it is known as ‘hex’
If carbon chain contains 7 carbon then it is known as ‘hept’
If carbon chain contains 8 carbon then it is known as ‘oct’
If carbon chain contains 9 carbon then it is known as ‘non’
If carbon chain contains 10 carbon then it is known as ‘dec’
The name to be ended with ‘ane’ for structural formula with Cn H2n +2
- Chain with least number of substituent taken as base chain for naming if, structure contain two chain with equal number of carbon
- Substituent need to be arranged alphabetically.
Answer to Problem 18P
The IUPAC name of given structure is 2-Methylpentane.
Explanation of Solution
The given structure contains 5 carbon and thus named as pentane with methyl group attached as substituent at 2nd position.
The IUPAC name of given structure is 2-Methylpentane.
(b)
Interpretation:
Interpret the IUPAC name for given structure.
Concept Introduction:
The naming of the alkane includes the following steps:
- Longest carbon chain need to be identify such as
If carbon chain contains 2 carbon then it is known as ‘eth’
If carbon chain contains 3 carbon then it is known as ‘prop’
If carbon chain contains 4 carbon then it is known as ‘but’
If carbon chain contains 5 carbon then it is known as ‘pent’
If carbon chain contains 6 carbon then it is known as ‘hex’
If carbon chain contains 7 carbon then it is known as ‘hept’
If carbon chain contains 8 carbon then it is known as ‘oct’
If carbon chain contains 9 carbon then it is known as ‘non’
If carbon chain contains 10 carbon then it is known as ‘dec’
The name to be ended with ‘ane’ for structural formula with Cn H2n +2
- Chain with least number of substituent taken as base chain for naming if, structure contain two chain with equal number of carbon
- Substituent need to be arranged alphabetically.
Answer to Problem 18P
The IUPAC name of given structure is 2,5-Dimethylhexane.
Explanation of Solution
The given structure contains 6 carbon and thus named as hexane with 2 methyl group attached as substituent at 2nd and 5th position.
The IUPAC name of given structure is 2,5-Dimethylhexane.
(c)
Interpretation:
Interpret the IUPAC name for given structure.
Concept Introduction:
The naming of the alkane includes the following steps:
- Longest carbon chain need to be identify such as
If carbon chain contains 2 carbon then it is known as ‘eth’
If carbon chain contains 3 carbon then it is known as ‘prop’
If carbon chain contains 4 carbon then it is known as ‘but’
If carbon chain contains 5 carbon then it is known as ‘pent’
If carbon chain contains 6 carbon then it is known as ‘hex’
If carbon chain contains 7 carbon then it is known as ‘hept’
If carbon chain contains 8 carbon then it is known as ‘oct’
If carbon chain contains 9 carbon then it is known as ‘non’
If carbon chain contains 10 carbon then it is known as ‘dec’
The name to be ended with ‘ane’ for structural formula with Cn H2n +2
- Chain with least number of substituent taken as base chain for naming if, structure contain two chain with equal number of carbon
- Substituent need to be arranged alphabetically.
Answer to Problem 18P
The IUPAC name of given structure is 3-ethyloctane.
Explanation of Solution
The given structure contains 8 carbon and thus named as octane with ethyl group attached as substituent at 3rd position.
The IUPAC name of given structure is 3-ethyloctane.
(d)
Interpretation:
Interpret the IUPAC name for given structure.
Concept Introduction:
The naming of the cylcoalkane includes the following steps:
- Longest parent cyclic chain need to be identify such as
If carbon ring contains 3 carbon then it is known as ‘cycloprop’
If carbon ring contains 4 carbon then it is known as ‘cyclobut’
If carbon ring contains 5 carbon then it is known as ‘cyclopent’
If carbon ring contains 6 carbon then it is known as ‘cyclohex’
If carbon ring contains 7 carbon then it is known as ‘cyclohept’
If carbon ring contains 8 carbon then it is known as ‘cyclooct’
If carbon ring contains 9 carbon then it is known as ‘cyclonon’
If carbon ring contains 10 carbon then it is known as ‘cyclodec’
The name to be ended with ‘ane’ for structural formula with Cn H2n
- Numbering of the substituent attached to ring need to be done and their summation should be count lower
- Substituent need to be arranged alphabetically.
- If same substituent is located in the ring then di, tri, or tetra may be used in front of name of substituent according to the number of substituent attached.
Answer to Problem 18P
The IUPAC name of given structure is 1-methyl-2-isopropylcyclohexane.
Explanation of Solution
The given structure contains 6 carbon in cyclic form and thus named as hexane with methyl group attached as substituent at 1st position.
The IUPAC name of given structure is 1-methyl-2-isopropylcyclohexane.
(e)
Interpretation:
Interpret the IUPAC name for given structure.
Concept Introduction:
The naming of the cylcoalkane includes the following steps:
- Longest parent cyclic chain need to be identify such as
If carbon ring contains 3 carbon then it is known as ‘cycloprop’
If carbon ring contains 4 carbon then it is known as ‘cyclobut’
If carbon ring contains 5 carbon then it is known as ‘cyclopent’
If carbon ring contains 6 carbon then it is known as ‘cyclohex’
If carbon ring contains 7 carbon then it is known as ‘cyclohept’
If carbon ring contains 8 carbon then it is known as ‘cyclooct’
If carbon ring contains 9 carbon then it is known as ‘cyclonon’
If carbon ring contains 10 carbon then it is known as ‘cyclodec’
The name to be ended with ‘ane’ for structural formula with Cn H2n
- Numbering of the substituent attached to ring need to be done and their summation should be count lower
- Substituent need to be arranged alphabetically.
- If same substituent is located in the ring then di, tri, or tetra may be used in front of name of substituent according to the number of substituent attached.
Answer to Problem 18P
The IUPAC name of given structure is isobutylcyclopentane.
Explanation of Solution
The given structure contains 5 carbon in cyclic form and thus named as cyclopentane with isobutyl attached as substituent.
The IUPAC name of given structure is isobutylcyclopentane.
(f)
Interpretation:
Interpret the IUPAC name for given structure.
Concept Introduction:
The naming of the cylcoalkane includes the following steps:
- Longest parent cyclic chain need to be identify such as
If carbon ring contains 3 carbon then it is known as ‘cycloprop’
If carbon ring contains 4 carbon then it is known as ‘cyclobut’
If carbon ring contains 5 carbon then it is known as ‘cyclopent’
If carbon ring contains 6 carbon then it is known as ‘cyclohex’
If carbon ring contains 7 carbon then it is known as ‘cyclohept’
If carbon ring contains 8 carbon then it is known as ‘cyclooct’
If carbon ring contains 9 carbon then it is known as ‘cyclonon’
If carbon ring contains 10 carbon then it is known as ‘cyclodec’
The name to be ended with ‘ane’ for structural formula with Cn H2n
- Numbering of the substituent attached to ring need to be done and their summation should be count lower
- Substituent need to be arranged alphabetically.
- If same substituent is located in the ring then di, tri, or tetra may be used in front of name of substituent according to the number of substituent attached.
Answer to Problem 18P
The IUPAC name of given structure is 4-ethyl-1,1-dimethylcyclohexane.
Explanation of Solution
The given structure contains 6 carbon in cyclic form and thus named as cyclohexane with 2 methyl attached as substituent at 1st position while ethyl at 4th position.
The IUPAC name of given structure is 4-ethyl-1,1-dimethylcyclohexane.
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Chapter 11 Solutions
Introduction to General, Organic and Biochemistry
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