323581
In which of the following reactions, the product obtained is chiral?
1
2
3
4
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323582
Which will undergo deprotonation most readily in basic medium ?
1 Both A and C
2 A only
3 B only
4 C only
Explanation:
(A) will undergo deprotonation most readily in basic medium due to the presence of two strong electron withdrawing groups. (Keto groups make it more acidic than ester groups.)
JEE - 2023
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323583
Assertion : Hydroxyketones are not directly used in Grignard reaction. Reason : Grignard reagents react with hydroxyl group.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Hydroxyketones are avoided in Grignard reactions due to the reactivity of Grignard reagents with the electrophilic hydroxyl group, forming unstable intermediates that can undergo rearrangements or decomposition. This gives undesired products like alcohols instead of the intended ketones. So the option (1) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323584
____ reagents are required for above conversion.
1 6
2 5
3 3
4 10
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323585
Nitromethane condenses with acetaldehyde to give
323581
In which of the following reactions, the product obtained is chiral?
1
2
3
4
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323582
Which will undergo deprotonation most readily in basic medium ?
1 Both A and C
2 A only
3 B only
4 C only
Explanation:
(A) will undergo deprotonation most readily in basic medium due to the presence of two strong electron withdrawing groups. (Keto groups make it more acidic than ester groups.)
JEE - 2023
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323583
Assertion : Hydroxyketones are not directly used in Grignard reaction. Reason : Grignard reagents react with hydroxyl group.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Hydroxyketones are avoided in Grignard reactions due to the reactivity of Grignard reagents with the electrophilic hydroxyl group, forming unstable intermediates that can undergo rearrangements or decomposition. This gives undesired products like alcohols instead of the intended ketones. So the option (1) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323584
____ reagents are required for above conversion.
1 6
2 5
3 3
4 10
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323585
Nitromethane condenses with acetaldehyde to give
323581
In which of the following reactions, the product obtained is chiral?
1
2
3
4
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323582
Which will undergo deprotonation most readily in basic medium ?
1 Both A and C
2 A only
3 B only
4 C only
Explanation:
(A) will undergo deprotonation most readily in basic medium due to the presence of two strong electron withdrawing groups. (Keto groups make it more acidic than ester groups.)
JEE - 2023
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323583
Assertion : Hydroxyketones are not directly used in Grignard reaction. Reason : Grignard reagents react with hydroxyl group.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Hydroxyketones are avoided in Grignard reactions due to the reactivity of Grignard reagents with the electrophilic hydroxyl group, forming unstable intermediates that can undergo rearrangements or decomposition. This gives undesired products like alcohols instead of the intended ketones. So the option (1) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323584
____ reagents are required for above conversion.
1 6
2 5
3 3
4 10
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323585
Nitromethane condenses with acetaldehyde to give
323581
In which of the following reactions, the product obtained is chiral?
1
2
3
4
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323582
Which will undergo deprotonation most readily in basic medium ?
1 Both A and C
2 A only
3 B only
4 C only
Explanation:
(A) will undergo deprotonation most readily in basic medium due to the presence of two strong electron withdrawing groups. (Keto groups make it more acidic than ester groups.)
JEE - 2023
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323583
Assertion : Hydroxyketones are not directly used in Grignard reaction. Reason : Grignard reagents react with hydroxyl group.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Hydroxyketones are avoided in Grignard reactions due to the reactivity of Grignard reagents with the electrophilic hydroxyl group, forming unstable intermediates that can undergo rearrangements or decomposition. This gives undesired products like alcohols instead of the intended ketones. So the option (1) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323584
____ reagents are required for above conversion.
1 6
2 5
3 3
4 10
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323585
Nitromethane condenses with acetaldehyde to give
323581
In which of the following reactions, the product obtained is chiral?
1
2
3
4
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323582
Which will undergo deprotonation most readily in basic medium ?
1 Both A and C
2 A only
3 B only
4 C only
Explanation:
(A) will undergo deprotonation most readily in basic medium due to the presence of two strong electron withdrawing groups. (Keto groups make it more acidic than ester groups.)
JEE - 2023
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323583
Assertion : Hydroxyketones are not directly used in Grignard reaction. Reason : Grignard reagents react with hydroxyl group.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Hydroxyketones are avoided in Grignard reactions due to the reactivity of Grignard reagents with the electrophilic hydroxyl group, forming unstable intermediates that can undergo rearrangements or decomposition. This gives undesired products like alcohols instead of the intended ketones. So the option (1) is correct.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323584
____ reagents are required for above conversion.
1 6
2 5
3 3
4 10
Explanation:
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323585
Nitromethane condenses with acetaldehyde to give
