16 Questions
What functional group do aldehydes and ketones contain?
Carbonyl functional group
What are some important applications of acetone, methyl ethyl ketone, and formaldehyde?
Solvents, polymers, and flavorings
What are the two categories of carbonyl compounds?
Aldehydes and ketones
How are aldehydes named?
By replacing the terminal -e with -al
What is the difference between Tollens' reagent and PCC?
Tollens' reagent oxidizes aldehydes to carboxylic acids, while PCC reduces ketones to secondary alcohols
What is the product of nucleophilic addition reactions of aldehydes and ketones with a strong nucleophile?
An alcohol
What is the reducing agent that can reduce carboxylic acids and their derivatives?
Lithium aluminum hydride
What is the product of acid-catalyzed addition of alcohols to aldehydes and ketones?
An acetal
What is the difference between the C=C bond in alkenes and the carbonyl functional group in aldehydes and ketones?
The carbonyl functional group is planar, shorter, stronger, and more polar than the C=C bond
Which of the following is not a category of carbonyl compounds?
Esters
How are aldehydes named?
By selecting the parent carbon chain containing the -CHO group and replacing the terminal -e of the corresponding alkane with -al
What is the difference in oxidation products when primary and secondary alcohols are oxidized?
Primary alcohols are oxidized to aldehydes, while secondary alcohols are oxidized to ketones
What is the product of the nucleophilic addition of water to aldehydes or ketones?
1,1-diols
What is the purpose of using acetals as protecting groups for aldehydes and ketones?
To prevent hydration of the aldehyde or ketone
What is the reducing agent that can reduce carboxylic acids and their derivatives?
Lithium aluminum hydride
What is the product of the reduction of a ketone using sodium borohydride?
Secondary alcohols
Study Notes
Aldehydes and Ketones: Nucleophilic Addition Reactions
- Aldehydes and ketones contain the carbonyl functional group, which is planar, shorter, stronger, and more polar than the C=C bond in alkenes.
- Carbonyl compounds are abundant in nature and found in many important biological, pharmaceutical, and synthetic polymer compounds.
- Acetone, methyl ethyl ketone, and formaldehyde have important industrial applications, such as solvents, polymers, and flavorings.
- Carbonyl compounds can be categorized into aldehydes and ketones (with the acyl group bonded to H or C) and carboxylic acids and their derivatives.
- Aldehydes are named by selecting the parent carbon chain containing the -CHO group and replacing the terminal -e of the corresponding alkane with -al.
- Ketones are named by selecting the parent carbon chain containing the C=O group, beginning numbering from the end nearest to the carbonyl carbon, and replacing the terminal -e with -one.
- Aldehydes and ketones can also be named as substituents using the acyl group and prefixes like oxo-.
- Primary alcohols can be oxidized to aldehydes using pyridinium chlorochromate (PCC), while secondary alcohols can be oxidized to ketones using PCC, CRO3, or Na2Cr2O7.
- Aldehydes can be oxidized to carboxylic acids using silver ions in aqueous ammonia (Tollens' reagent), while ketones are unreactive towards oxidation.
- Nucleophilic addition reactions of aldehydes and ketones involve a strong nucleophile attacking the electropositive carbonyl carbon, forming an alkoxide ion that is then protonated to produce an alcohol.
- Sodium borohydride can reduce ketones to secondary alcohols and aldehydes to primary alcohols, while lithium aluminum hydride is a powerful reducing agent that can reduce carboxylic acids and their derivatives.
- Nucleophilic addition of water to aldehydes or ketones gives 1,1-diols (geminal diols) and can be catalyzed by acid or base. Acid-catalyzed hydration involves protonation of the carbonyl oxygen, making the carbonyl carbon more electrophilic and facilitating the attack of water. Acid-catalyzed addition of alcohols to aldehydes and ketones produces acetals, which can serve as protecting groups for aldehydes and ketones.
Test your knowledge on nucleophilic addition reactions of aldehydes and ketones with this quiz! From the basics of naming and properties to the mechanisms of reactions and reducing agents, this quiz covers a wide range of topics on carbonyl compounds. Sharpen your skills on recognizing functional groups, understanding oxidation and reduction reactions, and predicting product formation. Whether you're a student learning organic chemistry or a professional working in the field, this quiz is a great way to challenge yourself and reinforce your understanding of
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
