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CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323304 The following reaction is known as
supporting img

1 Gattermann reaction

2 Perkin reaction

3 Kolbe's reaction

4 Gattermann - Koch Formylation

JEE - 2014

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323305 The reactivity of compound $Z$ with different halogens under appropriate conditions is given below:
The observed pattern of electrophilic substitution cannot be explained by
supporting img

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:

supporting img
(I), (II) and (III) are probable positions as per electronic effect of $OH$ 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.
supporting img

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323306 The number of OH groups in final product (B) are
supporting img

1 1

2 2

3 0

4 3

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323307 The gases evolved during the following reaction is/are:
supporting img

1

{CO}_{2}

2

{SO}_{2}

3

CO

4 Both (1) & (2)

Explanation:

supporting img
${CO}_{2} & {SO}_{3}$ will leave as good leaving groups via IPSO substitution.

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323304 The following reaction is known as
supporting img

1 Gattermann reaction

2 Perkin reaction

3 Kolbe's reaction

4 Gattermann - Koch Formylation

JEE - 2014

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323305 The reactivity of compound $Z$ with different halogens under appropriate conditions is given below:
The observed pattern of electrophilic substitution cannot be explained by
supporting img

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:

supporting img
(I), (II) and (III) are probable positions as per electronic effect of $OH$ 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.
supporting img

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323306 The number of OH groups in final product (B) are
supporting img

1 1

2 2

3 0

4 3

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323307 The gases evolved during the following reaction is/are:
supporting img

1

{CO}_{2}

2

{SO}_{2}

3

CO

4 Both (1) & (2)

Explanation:

supporting img
${CO}_{2} & {SO}_{3}$ will leave as good leaving groups via IPSO substitution.

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323304 The following reaction is known as
supporting img

1 Gattermann reaction

2 Perkin reaction

3 Kolbe's reaction

4 Gattermann - Koch Formylation

JEE - 2014

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323305 The reactivity of compound $Z$ with different halogens under appropriate conditions is given below:
The observed pattern of electrophilic substitution cannot be explained by
supporting img

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:

supporting img
(I), (II) and (III) are probable positions as per electronic effect of $OH$ 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.
supporting img

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323306 The number of OH groups in final product (B) are
supporting img

1 1

2 2

3 0

4 3

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323307 The gases evolved during the following reaction is/are:
supporting img

1

{CO}_{2}

2

{SO}_{2}

3

CO

4 Both (1) & (2)

Explanation:

supporting img
${CO}_{2} & {SO}_{3}$ will leave as good leaving groups via IPSO substitution.

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323304 The following reaction is known as
supporting img

1 Gattermann reaction

2 Perkin reaction

3 Kolbe's reaction

4 Gattermann - Koch Formylation

JEE - 2014

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323305 The reactivity of compound $Z$ with different halogens under appropriate conditions is given below:
The observed pattern of electrophilic substitution cannot be explained by
supporting img

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:

supporting img
(I), (II) and (III) are probable positions as per electronic effect of $OH$ 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.
supporting img

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323306 The number of OH groups in final product (B) are
supporting img

1 1

2 2

3 0

4 3

CHXII11:ALCOHOLS, PHENOLS AND ETHERS

323307 The gases evolved during the following reaction is/are:
supporting img

1

{CO}_{2}

2

{SO}_{2}

3

CO

4 Both (1) & (2)

Explanation:

supporting img
${CO}_{2} & {SO}_{3}$ will leave as good leaving groups via IPSO substitution.