aldol condensation in some cases the adducts obtained from the aldol addition can easily be converted in situ to unsaturated carbonyl compounds either thermally or under acidic or basic catalysis ...
Filetype Power Point PPTX | Posted on 09 Sep 2022 | 3 years ago
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...Aldol condensation in some cases the adducts obtained from addition can easily be converted situ to unsaturated carbonyl compounds either thermally or under acidic basic catalysis formation of conjugated system is driving force for this spontaneous dehydration a variety protocols product directly without isolation second step robinson annulation mechanism see benzoin coupling reaction between two aldehydes that allows preparation hydroxyketones first methods were only suitable conversion aromatic cyanide ion create cyanohydrin effects an umpolung normal charge affinity and electrophilic aldehyde carbon becomes nucleophilic after deprotonation thiazolium salt may also used as catalyst stetter strong base now able deprotonate at former c atom equivalent reacts with carbanion elimination regenerates compound end knoevenagel doebner modification acid afford which possible presence carboxylic groups includes pyridine induced decarboxylation enol intermediate formed initially resulting under...