Derive the structure of
(i) 2−Chlorohexane
(ii) Pent-4-en-2-ol
(iii) 3−Nitrocyclohexene
(iv) Cyclohex-2-en-1-ol
(v) 6−Hydroxyheptanal
(i) 2−Chlorohexane
(ii) Pent-4-en-2-ol
(iii) 3−Nitrocyclohexene
(iv) Cyclohex-2-en-1-ol
(v) 6−Hydroxyheptanal
(i) Step 1 : Parent chain
'Hexane' indicates the presence of 6 carbon atoms in the chain.
Step 2 : Function group/substituents
The functional group chloro is present at carbon 2nd.
Step 3 : Structure of the compound
Hence, the structure of the compound is
CH3CH2CH2CH2CH(Cl)CH3.
Final answer:
CH3CH2CH2CH2CH(Cl)CH3.
(ii) Step 1 : Parent chain
'Pent' indicates the presence of 5 carbon atoms in the chain.
Step 2 : Function group/substituents
'en' and 'ol' correspond to the functional groups C=C and −OH at carbon atoms 4th and 2nd respectively.
Step 3 : Structure of the compound
Hence, the structure of the compound is
CH2=CHCH2CH(OH)CH3.
Final answer:
CH2=CHCH2CH(OH)CH3.
(iii) Step 1 : Parent chain
Six membered ring containing a carbon-carbon double bond is implied by cyclohexene, which is represent in structure (I).
Step 2 : Function group/substituents
The prefix 3−nitro means that a nitro group is present on 3rd carbon, ‘ene (=)’ is suffixed functional group whereas nitro (−NO2) is prefixed functional group. Therefore, ‘ene’ gets preference over nitro group.
Step 3 : Structure of the compound
Hence, the structure of the compound is (II)
Final answer:
(iv) Step 1 : Parent chain
Six membered ring containing a carbon-carbon double bond is implied by cyclohexene, which is represent in structure (I).
Step 2 : Function group/substituents
′1−ol′ means that a −OH group is present at 1st carbon and ‘2−en′ means that a double bond is present at 2nd carbon. −OH is suffixed functional group and gets preference over C=C bond.
Step 3 : Structure of the compound
Hence, the structure of the compound is (II)
Final Answer:
(v) Step 1 : Parent chain
'heptanal' shows the compound to be an aldehyde containing 7 carbon atoms in the parent chain.
Step 2 : Function group/substituents
The ′6−hydroxy′ shows that −OH group is present at 6th carbon. The carbon of −CHO group is also included while numbering the parent chain.
Step 3 : Structure of the compound
Hence, the structure of the compound is
CH3CH(OH)CH2CH2CH2CH2CHO
Final answer:
CH3CH(OH)CH2CH2CH2CH2CHO
'Hexane' indicates the presence of 6 carbon atoms in the chain.
Step 2 : Function group/substituents
The functional group chloro is present at carbon 2nd.
Step 3 : Structure of the compound
Hence, the structure of the compound is
CH3CH2CH2CH2CH(Cl)CH3.
Final answer:
CH3CH2CH2CH2CH(Cl)CH3.
(ii) Step 1 : Parent chain
'Pent' indicates the presence of 5 carbon atoms in the chain.
Step 2 : Function group/substituents
'en' and 'ol' correspond to the functional groups C=C and −OH at carbon atoms 4th and 2nd respectively.
Step 3 : Structure of the compound
Hence, the structure of the compound is
CH2=CHCH2CH(OH)CH3.
Final answer:
CH2=CHCH2CH(OH)CH3.
(iii) Step 1 : Parent chain
Six membered ring containing a carbon-carbon double bond is implied by cyclohexene, which is represent in structure (I).
Step 2 : Function group/substituents
The prefix 3−nitro means that a nitro group is present on 3rd carbon, ‘ene (=)’ is suffixed functional group whereas nitro (−NO2) is prefixed functional group. Therefore, ‘ene’ gets preference over nitro group.
Step 3 : Structure of the compound
Hence, the structure of the compound is (II)
Final answer:
(iv) Step 1 : Parent chain
Six membered ring containing a carbon-carbon double bond is implied by cyclohexene, which is represent in structure (I).
Step 2 : Function group/substituents
′1−ol′ means that a −OH group is present at 1st carbon and ‘2−en′ means that a double bond is present at 2nd carbon. −OH is suffixed functional group and gets preference over C=C bond.
Step 3 : Structure of the compound
Hence, the structure of the compound is (II)
Final Answer:
(v) Step 1 : Parent chain
'heptanal' shows the compound to be an aldehyde containing 7 carbon atoms in the parent chain.
Step 2 : Function group/substituents
The ′6−hydroxy′ shows that −OH group is present at 6th carbon. The carbon of −CHO group is also included while numbering the parent chain.
Step 3 : Structure of the compound
Hence, the structure of the compound is
CH3CH(OH)CH2CH2CH2CH2CHO
Final answer:
CH3CH(OH)CH2CH2CH2CH2CHO
