Orgo 2 carboxylic acid derivatives flashcards
This set of flashcards covers carboxylic acid derivatives, including their structures, properties, and reactions, essential for organic chemistry courses.
Quiz(32 questions)
1. What is a carboxylic acid derivative?
Terms in this Study Set(32)
Basic Carboxylic Acid Derivatives(16)
What are carboxylic acid derivatives?
Compounds derived from carboxylic acids by substituting the hydroxyl group (-OH) with another group, such as halides or alcohols.
Identify three types of carboxylic acid derivatives.
1. Esters 2. Amides 3. Acid chlorides
True or False: All carboxylic acid derivatives are reactive.
True. Most derivatives are reactive due to the electrophilic nature of the carbonyl carbon.
Complete the sentence: Esters are formed from carboxylic acids and _____ .
alcohols.
How do amides differ from esters?
Amides contain a nitrogen atom (-NH2, -NHR, or -NR2) replacing the -OH group, while esters have an -OR group.
What is the functional group of an acid chloride?
-C(=O)Cl. It contains a carbonyl group directly bonded to a chlorine atom.
Which derivative is least stable?
Acid chlorides. They are very reactive and can easily convert to other derivatives.
Cause → Effect: Carboxylic acid + alcohol → ?
An ester is formed via a condensation reaction.
What are the properties of esters?
- Generally have fruity odors - Less polar than carboxylic acids - Used in flavorings and fragrances.
Fill in the blank: _____ can be hydrolyzed to form carboxylic acids.
Esters and amides.
True or False: Amides can be derived from both ammonia and amines.
True. Amides can come from primary, secondary, or tertiary amines.
What type of reaction forms amides?
Condensation reaction between a carboxylic acid and an amine.
Compare the reactivity of esters and acid chlorides.
Acid chlorides are more reactive than esters due to the leaving group ability of Cl compared to -OR.
What is the significance of the carbonyl group in derivatives?
The carbonyl group is highly electrophilic, making derivatives susceptible to nucleophilic attack.
Complete the sentence: Acid chlorides can be converted to _____ by reaction with alcohols.
Esters.
What is a common industrial use of esters?
Esters are commonly used as solvents and in the production of plastics.
Reactions of Carboxylic Acid Derivatives(16)
What reaction forms esters from carboxylic acids?
Esterification: Carboxylic acid + alcohol → ester + water. Acid catalyst often used.
True or False: Acid chlorides are more reactive than esters.
True. Acid chlorides react faster due to the good leaving group (Cl) compared to esters.
Fill in the blank: Anhydrides are formed from _____.
Two carboxylic acids or one carboxylic acid and one acid chloride.
What is the outcome of transesterification?
An ester is converted into another ester. Example: Ester A + Alcohol B → Ester C + Alcohol A.
Which reagent converts acid chlorides to amides?
Ammonia (NH₃) or primary/secondary amines with nucleophilic attack.
Mechanism type for nucleophilic acyl substitution?
General mechanism involves: nucleophilic attack → tetrahedral intermediate → reforming carbonyl → leaving group departure.
True or False: Esters hydrolyze faster in acidic conditions.
True. Acidic conditions enhance nucleophilic attack by water on the carbonyl carbon.
Compare the reactivity of esters and anhydrides.
Anhydrides are generally more reactive than esters due to better leaving group ability.
What is formed when an ester undergoes hydrolysis?
Carboxylic acid + Alcohol. Reaction can be under acidic or basic conditions.
Cause → Effect: Acid chloride + alcohol → ?
Ester + HCl. Acid chloride reacts with alcohol, releasing HCl.
What is the role of methanol in the Fischer esterification?
Methanol acts as the alcohol component, reacting with the carboxylic acid to form an ester.
What reagent is used for reduction of esters?
Lithium aluminum hydride (LiAlH₄) is commonly used to reduce esters to primary alcohols.
Give an example of an acyl substitution reaction.
Acid chloride + amine → Amide + HCl. Nucleophilic attack and loss of HCl.
Which reaction converts an anhydride to an ester?
Anhydride + alcohol → Ester + carboxylic acid. Efficient nucleophilic acyl substitution.
What is saponification?
Base-catalyzed hydrolysis of ester to produce carboxylic acid and alcohol. Common in soap making.
Fill in the blank: Esters can be converted to carboxylic acids via _____.
Hydrolysis (acidic or basic).
Questions in this Study Set(32)
1. What is a carboxylic acid derivative?
2. What reaction leads to the formation of carboxylic acid derivatives from carboxylic acids?
3. Which of the following is NOT considered a carboxylic acid derivative?
4. True or False: Anhydrides are less reactive than acid chlorides.
5. What do esters and carboxylic acids have in common?
6. Fill in the blank: Acid chlorides can be formed from _____.
7. Which of the following represents the functional group of an amide?
8. What is the product when an acid chloride reacts with water?
9. Which reaction forms esters?
10. Which reagent is commonly used to convert esters into amides?
11. What is the primary reason for the high reactivity of acid chlorides?
12. Mechanism type for the reaction of acid chlorides with alcohols?
13. True or False: Amides can be formed from secondary amines.
14. True or False: Hydrolysis of esters occurs faster under basic conditions.
15. What happens when an ester undergoes hydrolysis?
16. Which is NOT a product of the hydrolysis of a carboxylic acid derivative?
17. Which of the following is true about the stability of amides compared to esters?
18. What is formed when an anhydride reacts with an alcohol?
19. Which of the following compounds is most likely to undergo nucleophilic acyl substitution?
20. What is the primary function of water in the hydrolysis of esters?
21. Complete the sentence: Acid chlorides can be converted to _____ when reacted with alcohols.
22. Which reaction describes the process of saponification?
23. Which property is commonly associated with esters?
24. What reagent is used to reduce an acid chloride to an alcohol?
25. Which type of reaction can convert a carboxylic acid into an amide?
26. Fill in the blank: Esters can be transformed into carboxylic acids through _____.
27. What is the significance of the carbonyl group in carboxylic acid derivatives?
28. What is the final product of transesterification?
29. What is a common industrial use of acid chlorides?
30. Which reaction type involves nucleophilic attack followed by the departure of a leaving group?
31. Which of the following carboxylic acid derivatives is formed by the reaction of a carboxylic acid with an alcohol and results in a compound with a -C(=O)O-R functional group?
32. What is the product of a nucleophilic acyl substitution reaction involving an acid chloride and a primary amine?
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