l17 - Aldol Condensation O R 2 OH- R O H + H 2 O H R 2 Enal...

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Unformatted text preview: Aldol Condensation O R 2 OH- R O H + H 2 O H R 2 Enal H R O ? OH- O O H H What aldehyde would give this enal? O O O O O O A B C D O OH- O O O H O H O O H OH- Ketones H + O O O + But with ketones the reaction is unfavorable. Retro Aldol Ketones are more stable than aldehydes. There are “tricks” that can be used to remove the product from the OH- catalyst. O OH- O O O H O H O O H OH- H + O O O O + Soxhlet extractor Aldol Product The product is separated from the catalyst so Acetone Ba(OH) 2 solid the catalyst so reverse reaction does not occur O H O H H O H O H H O R H H H 2 O H H R H H H R H + H O R H H + Acid Catalyzed H H O R H H O H Catalyzed Aldol H 2 O H H H R H H O R H O H + H R O Aldol R H H H R H H H O R H H H R Aldol H 2 O Enal H O H O R 1 H O R 2 + R 1 H R 2 OH-- H 2 O H R 2 H O + Can you react one aldehyde with another? H R 1 H O + Crossed Aldol Reaction 4 products R 1 H R 1 How many Enals will this reaction give?...
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This note was uploaded on 01/09/2011 for the course CHE 322 taught by Professor Staff during the Spring '08 term at SUNY Stony Brook.

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l17 - Aldol Condensation O R 2 OH- R O H + H 2 O H R 2 Enal...

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