Given reaction is known Gattermann formylation reaction.
JEE - 2014
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323305
The reactivity of compound \(\mathrm{Z}\) with different halogens under appropriate conditions is given below: The observed pattern of electrophilic substitution cannot be explained by
1 The electronic effect of the tert-butyl group
2 The electronic effect of the phenolic group
3 The steric effect of the tert-butyl group
4 The steric effect of the halogen
Explanation:
(I), (II) and (III) are probable positions as per electronic effect of \(\mathrm{OH}\) group where electrophile can attack and due to steric hinderance at (II) and (III) positions bulky electrophiles are not preferred like I only preferred at position I, Bromine at positions II and I is while chlorine at all three positions.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323306
The number of OH groups in final product (B) are
1 1
2 2
3 0
4 3
Explanation:
2-OH groups are present.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323307
The gases evolved during the following reaction is/are:
1 \(\mathrm{CO}_{2}\)
2 \(\mathrm{SO}_{2}\)
3 \(\mathrm{CO}\)
4 Both (1) & (2)
Explanation:
\(\mathrm{CO}_{2} \& \mathrm{SO}_{3}\) will leave as good leaving groups via IPSO substitution.
Given reaction is known Gattermann formylation reaction.
JEE - 2014
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323305
The reactivity of compound \(\mathrm{Z}\) with different halogens under appropriate conditions is given below: The observed pattern of electrophilic substitution cannot be explained by
1 The electronic effect of the tert-butyl group
2 The electronic effect of the phenolic group
3 The steric effect of the tert-butyl group
4 The steric effect of the halogen
Explanation:
(I), (II) and (III) are probable positions as per electronic effect of \(\mathrm{OH}\) group where electrophile can attack and due to steric hinderance at (II) and (III) positions bulky electrophiles are not preferred like I only preferred at position I, Bromine at positions II and I is while chlorine at all three positions.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323306
The number of OH groups in final product (B) are
1 1
2 2
3 0
4 3
Explanation:
2-OH groups are present.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323307
The gases evolved during the following reaction is/are:
1 \(\mathrm{CO}_{2}\)
2 \(\mathrm{SO}_{2}\)
3 \(\mathrm{CO}\)
4 Both (1) & (2)
Explanation:
\(\mathrm{CO}_{2} \& \mathrm{SO}_{3}\) will leave as good leaving groups via IPSO substitution.
Given reaction is known Gattermann formylation reaction.
JEE - 2014
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323305
The reactivity of compound \(\mathrm{Z}\) with different halogens under appropriate conditions is given below: The observed pattern of electrophilic substitution cannot be explained by
1 The electronic effect of the tert-butyl group
2 The electronic effect of the phenolic group
3 The steric effect of the tert-butyl group
4 The steric effect of the halogen
Explanation:
(I), (II) and (III) are probable positions as per electronic effect of \(\mathrm{OH}\) group where electrophile can attack and due to steric hinderance at (II) and (III) positions bulky electrophiles are not preferred like I only preferred at position I, Bromine at positions II and I is while chlorine at all three positions.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323306
The number of OH groups in final product (B) are
1 1
2 2
3 0
4 3
Explanation:
2-OH groups are present.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323307
The gases evolved during the following reaction is/are:
1 \(\mathrm{CO}_{2}\)
2 \(\mathrm{SO}_{2}\)
3 \(\mathrm{CO}\)
4 Both (1) & (2)
Explanation:
\(\mathrm{CO}_{2} \& \mathrm{SO}_{3}\) will leave as good leaving groups via IPSO substitution.
Given reaction is known Gattermann formylation reaction.
JEE - 2014
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323305
The reactivity of compound \(\mathrm{Z}\) with different halogens under appropriate conditions is given below: The observed pattern of electrophilic substitution cannot be explained by
1 The electronic effect of the tert-butyl group
2 The electronic effect of the phenolic group
3 The steric effect of the tert-butyl group
4 The steric effect of the halogen
Explanation:
(I), (II) and (III) are probable positions as per electronic effect of \(\mathrm{OH}\) group where electrophile can attack and due to steric hinderance at (II) and (III) positions bulky electrophiles are not preferred like I only preferred at position I, Bromine at positions II and I is while chlorine at all three positions.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323306
The number of OH groups in final product (B) are
1 1
2 2
3 0
4 3
Explanation:
2-OH groups are present.
CHXII11:ALCOHOLS, PHENOLS AND ETHERS
323307
The gases evolved during the following reaction is/are:
1 \(\mathrm{CO}_{2}\)
2 \(\mathrm{SO}_{2}\)
3 \(\mathrm{CO}\)
4 Both (1) & (2)
Explanation:
\(\mathrm{CO}_{2} \& \mathrm{SO}_{3}\) will leave as good leaving groups via IPSO substitution.
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