Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 5: Problem 144

Aldol condensation cannot occur between (a) two aldehydes (b) an aldehyde and a ketone (c) two ketones (d) an aldehyde and an ester

Short Answer

Expert verified
Answer: An aldehyde and an ester.

Step by step solution

01

Option (a): Two aldehydes

Two aldehydes could potentially undergo Aldol condensation because both have a carbonyl group and at least one α-hydrogen. Thus, this option is not the correct answer.
02

Option (b): An aldehyde and a ketone

Both aldehydes and ketones have carbonyl groups, and they usually have α-hydrogens. Therefore, an aldehyde and a ketone can also undergo Aldol condensation. Thus, this option is not the correct answer.
03

Option (c): Two ketones

Similar to aldehydes, ketones also possess carbonyl groups and α-hydrogens, so they can undergo Aldol condensation as well. Thus, this option is not the correct answer.
04

Option (d): An aldehyde and an ester

An aldehyde contains a carbonyl group and α-hydrogens which would make it capable of undergoing Aldol condensation. However, esters generally do not have α-hydrogens because the carbonyl group is attached to an -OR group. Consequently, esters cannot generate the required enol or enolate ion during an Aldol reaction. Therefore, the correct answer is option (d).

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

CC(Cl)(Cl)Cl (b) O=[N+]([O-]… # Which of the following is obtained when 4-chlorobenzene sulphonic acid is treated with excess sodium acetate? (a) N#CC(Cl)(Cl)Cl (b) O=[N+]([O-])c1ccc(Cl)cc1 \(+\mathrm{CH}_{3} \mathrm{COOH}\) COC(=O)c1ccc(O)cc1 \(\mathrm{NaOH}\) (c) O=C(O)Cc1ccc(Cl)cc1 (d)

The product obtained when benzene is treated with acetyl chloride in presence of anhydrous \(\mathrm{AlCl}_{2}\) is (a) benzophenone (b) benzoyl chloride (c) acetophenone (d) ethyl phenyl ketone

Acetaldehyde when heated with \(\mathrm{NaOH}\) gives (a) but-2-enal (b) but- 3 -enal (c) propenal (d) butanal

The increasing order of the rate of HCN addition to the following carbonyl compounds is O=Cc1ccccc1 O=Cc1cccc(Cl)c1 \(\mathrm{Ph}-\mathrm{CO}-\mathrm{Ph}\) (IV) (II) (III) (a) II > IV < III < I (b) IV \(<\) II \(<\) III \(<\mathrm{I}\) (c) \(\mathrm{IV}<\mathrm{I} \leq \mathrm{III}<\mathrm{II}\) (d) \(\quad \mathrm{IV}<\mathrm{III}<\mathrm{II}<\mathrm{I}\)

The reaction of ethanoyl chloride with sodium ethanoate gives (a) Ethyl ethanoate (b) ethanoic anhydride (c) Butane-2,3-dione (d) sodium 3 -oxobutanoate
See all solutions

Recommended explanations on Chemistry Textbooks

Chemical Reactions

Read Explanation

Organic Chemistry

Read Explanation

Making Measurements

Read Explanation

The Earths Atmosphere

Read Explanation

Ionic and Molecular Compounds

Read Explanation

Chemical Analysis

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free