Textbook Question
Draw the structures of the following carboxylic acids.
(e) trans-2-methylcyclohexanecarboxylic acid
(f) 2,3-dimethylfumaric acid
(g) m-chlorobenzoic acid
(h) 3-methylphthalic acid
22. Carboxylic Acid Derivatives: NAS
Naming Carboxylic Acids
2:09 minutesProblem 2a
Textbook Question
Name the following:
a. 
Verified step by step guidance1
Step 1: Identify the parent chain. Look for the longest continuous chain of carbon atoms in the structure. This will determine the base name of the compound (e.g., methane, ethane, propane, etc.).
Step 2: Number the parent chain. Assign numbers to the carbon atoms in the parent chain, starting from the end closest to the first substituent (branch or functional group).
Step 3: Identify and name the substituents. Look for any groups attached to the parent chain (e.g., methyl, ethyl, halogens, etc.) and note their positions based on the numbering of the parent chain.
Step 4: Combine the names. Write the name of the compound by listing the substituents in alphabetical order, followed by the parent chain name. Use hyphens to separate numbers from words and commas to separate multiple numbers.
Step 5: Check for special functional groups or stereochemistry. If the compound contains functional groups (e.g., alcohols, ketones, carboxylic acids) or stereochemistry (e.g., cis/trans, R/S), include these in the name according to IUPAC rules.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Nomenclature
Nomenclature in organic chemistry refers to the systematic naming of chemical compounds based on established rules. The International Union of Pure and Applied Chemistry (IUPAC) provides guidelines to ensure that each compound has a unique and descriptive name, which reflects its structure and functional groups. Understanding nomenclature is essential for accurately identifying and communicating about organic compounds.
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Functional Groups
Functional groups are specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules. Common functional groups include hydroxyl (-OH), carboxyl (-COOH), and amino (-NH2) groups. Recognizing functional groups is crucial for predicting the behavior and reactivity of organic compounds, as they largely determine the compound's properties.
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Structural Isomers
Structural isomers are compounds that have the same molecular formula but differ in the arrangement of atoms. This can include variations in the connectivity of atoms or the presence of different functional groups. Understanding structural isomerism is important because it can significantly affect the physical and chemical properties of the compounds, leading to different reactivities and applications.
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