Multiple Choice
Predict the products of the following reaction.
10. Addition Reactions
Ozonolysis
5:44 minutesProblem 85b
Textbook Question
For each compound, show the products obtained from ozonolysis, followed by treatment with dimethyl sulfide.
b. 
Verified step by step guidance1
Step 1: Identify the functional group in the given compound. The structure provided is a cyclohexene ring with a methyl group attached to one of the carbons. The double bond in the cyclohexene ring is the site of ozonolysis.
Step 2: Understand the ozonolysis reaction. Ozonolysis involves the cleavage of the double bond in the presence of ozone (O₃), forming an ozonide intermediate. This intermediate is then treated with a reducing agent, such as dimethyl sulfide (DMS), to yield carbonyl compounds.
Step 3: Break the double bond in the cyclohexene ring. The double bond will split into two fragments, and each carbon involved in the double bond will form a carbonyl group (either an aldehyde or a ketone).
Step 4: Analyze the structure after cleavage. The double bond in the cyclohexene ring splits into two carbonyl groups. The methyl group remains attached to one of the carbons, and the ring structure is opened.
Step 5: Write the products. The products of ozonolysis followed by treatment with dimethyl sulfide will be two carbonyl compounds. Specifically, one will be a ketone due to the methyl group, and the other will be an aldehyde. Ensure the correct placement of the functional groups based on the original structure.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Ozonolysis
Ozonolysis is a reaction involving the cleavage of alkenes or alkynes using ozone (O3) to form carbonyl compounds, such as aldehydes and ketones. The reaction typically proceeds through the formation of a molozonide intermediate, which rearranges to form ozonides. This process is crucial for determining the structure of unsaturated compounds and is often followed by reductive workup to yield stable products.
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Dimethyl Sulfide (DMS) Treatment
Dimethyl sulfide (DMS) is commonly used as a reducing agent in organic chemistry, particularly following ozonolysis. After ozonolysis, DMS reduces the ozonide intermediates to yield aldehydes or ketones, effectively stabilizing the products. This step is essential for preventing the formation of unwanted byproducts and ensuring that the desired carbonyl compounds are obtained.
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Cyclohexane Derivatives
Cyclohexane derivatives are compounds that contain a cyclohexane ring with various substituents. The structure of these derivatives influences their reactivity in reactions such as ozonolysis. Understanding the positioning and nature of substituents on the cyclohexane ring is vital for predicting the products formed during ozonolysis and subsequent reactions, as they can affect sterics and electronic properties.
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