Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

16. Carboxylic Acids and Their Derivatives

Naming Amides

GOB Chemistry

16. Carboxylic Acids and Their Derivatives

Naming Amides

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2:51 minutes

Problem 44c

Textbook Question

Draw the condensed structural formula for each of the following amides:
c. 3-methylbutyramide

Verified step by step guidance

Step 1: Understand the structure of the parent compound. The name '3-methylbutyramide' indicates that the parent compound is butyramide, which is derived from butanoic acid (a four-carbon carboxylic acid). The '-amide' suffix means the carboxylic acid group (-COOH) is replaced by an amide group (-CONH2).

Step 2: Identify the substituent. The '3-methyl' prefix indicates that there is a methyl group (-CH3) attached to the third carbon of the butyramide chain. Number the carbon chain starting from the carbon in the amide group to locate the third carbon.

Step 3: Write the backbone structure. Begin with the amide group (-CONH2) attached to the first carbon. Then, add three more carbons in a straight chain to complete the four-carbon backbone of butyramide.

Step 4: Add the substituent. Attach the methyl group (-CH3) to the third carbon of the chain, as specified by the name '3-methylbutyramide.'

Step 5: Combine all components into the condensed structural formula. Write the structure in a condensed format, showing the amide group, the main chain, and the substituent. For example, the condensed formula will look like CH3-CH(CH3)-CH2-CONH2.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Amides

Amides are organic compounds derived from carboxylic acids where the hydroxyl group is replaced by an amine or ammonia. They have the general structure R-CO-NR'R'', where R represents a hydrocarbon chain, and NR'R'' indicates the nitrogen atom bonded to one or more alkyl or aryl groups. Amides are important in various biological processes and are commonly found in proteins.

Condensed Structural Formula

A condensed structural formula is a way of representing a chemical structure that shows the arrangement of atoms in a molecule without depicting all the bonds explicitly. It typically groups atoms together to indicate how they are connected, making it easier to visualize the molecular structure. For example, in the case of amides, the carbonyl (C=O) and amine (N-H) groups are highlighted in the formula.

3-Methylbutyramide

3-Methylbutyramide is a specific amide derived from 3-methylbutanoic acid. Its structure includes a butane chain with a methyl group on the third carbon, and the amide functional group (-C(=O)NR2) attached to the terminal carbon. Understanding its structure is essential for drawing its condensed formula, which will reflect the arrangement of the carbon chain and the amide group.