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Hemiacetal and Acetal Formation.doc

Course Code
CHEM 222
Karine Auclair

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Addition of Alcohol to Carbonyl: Hemiacetal and Acetal Formation
Hemiacetal Formation
when a carbonyl group becomes a carbon attached to an –OH and an –OR
Can be produced 3 ways
1. Normal conditions, proton shift
2. Acid catalyzed
3. Base catalyzed
There is also a aldehyde hydrates, or gem-Diols
1. Normal Conditions, proton shift, hemiacetal formation
2. Acid Catalyzed hemiacetal formation
3. Base Catalyzed hemiacetal formation
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