Textbook Question
Give systematic names for the following carboxylic acids:
d. CH3(CH2)5COOH
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16. Carboxylic Acids and Their Derivatives
Naming Carboxylic Acids
3:49 minutesProblem 24c
Textbook Question
The reaction that follows is catalyzed by isocitrate dehydrogenase and occurs in two steps, the first of which (step A) is formation of an unstable intermediates (shown in brackets).
c. Which of the structures shown can be described as a β-keto acid?
Verified step by step guidance1
Step 1: Understand the term 'ß-keto acid'. A ß-keto acid is a molecule that contains both a ketone group (C=O) and a carboxylic acid group (-COOH), where the ketone group is located on the carbon atom that is beta (two carbons away) from the carboxylic acid group.
Step 2: Examine the structures provided in the problem. Identify the functional groups present in each structure, specifically looking for a ketone group and a carboxylic acid group.
Step 3: Determine the relative positions of the ketone group and the carboxylic acid group in each structure. Check if the ketone group is located on the beta carbon relative to the carboxylic acid group.
Step 4: Identify the structure(s) that meet the criteria for a ß-keto acid. This involves confirming that the ketone group is exactly two carbons away from the carboxylic acid group.
Step 5: Conclude which structure(s) can be described as a ß-keto acid based on the analysis of their functional groups and relative positions.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Isocitrate Dehydrogenase
Isocitrate dehydrogenase is an enzyme that plays a crucial role in the citric acid cycle (Krebs cycle), catalyzing the oxidative decarboxylation of isocitrate to alpha-ketoglutarate. This reaction is significant for energy production and metabolic regulation. Understanding its function helps in grasping how intermediates are formed and transformed during cellular respiration.
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ß-Keto Acid
A ß-keto acid is a type of organic compound that contains a ketone group (C=O) at the beta position relative to a carboxylic acid group (–COOH). This structure is important in various biochemical pathways, including metabolism and the synthesis of amino acids. Identifying ß-keto acids is essential for understanding their role in metabolic reactions and their potential as intermediates.
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Unstable Intermediates
Unstable intermediates are transient species formed during chemical reactions that have a short lifespan and are often highly reactive. In enzymatic reactions, these intermediates can influence the reaction pathway and the overall kinetics. Recognizing these intermediates is vital for understanding the mechanisms of enzyme-catalyzed reactions and the stability of the products formed.
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