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Aldehyde and Ketone Reactions
Review - Oxidation Reaction: 8. Oxidation primary alcohol --> aldehyde 9. Oxidation secondary alchol --> ketone 10. Oxidation aldehyde --> acid New Reactions: 6. Reduction: aldehyde + hydrogen --> pri. Alcohol. 6. Reduction: ketone + hydrogen --> sec. Alcohol 14. Hemiacetal Synthesis: alcohol + aldehyde or ketone --> hemiacetal 15. Acetal Synthesis: hemiacetal + alcohol --> acetal
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Aldehyde and Ketone Reactions
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Aldehyde and Ketone Reactions
Reduction: aldehyde + hydrogen --> pri. Alcohol Form of addition reaction.
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Reduction: aldehyde + hydrogen
Break hydrogen bond
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Reduction: aldehyde + hydrogen
Break double bond and use electrons to bond with hydrogen.
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Reduction: aldehyde + hydrogen
Brief Method
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Hemiacetal and Acetal Functional Groups
Hemiacetal: alcohol and ether on same carbon Acetal: Two ethers on same carbon
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Hemiacetal Synthesis: aldehyde + hydrogen
Alcohol + aldehyde --> hemiacetal Ethanal + methanol Alcohol oxygen becomes an ether Carbon double bond oxygen becomes an alcohol
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Synthesis of Acetal Functional Group
Acetal: alcohol plus hemiacetal (ether synthesis) Acetal: Two ethers on same carbon
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Aldehyde and Ketone Reactions
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Aldehyde and Ketone Reactions
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Hemiacetal and Acetal Reactions
Ques. 13: Complete the following reactions:
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