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1 day ago · Here’s a comparative analysis: Reactants: Aldol condensation involves aldehydes or ketones, while Claisen condensation involves esters. Products: Aldol produces β-hydroxy carbonyl compounds, which can further dehydrate to form α,β-unsaturated carbonyl compounds. Claisen yields β-keto esters or diketones. Conditions: Both reactions require ...
Jun 13, 2024 · What is Claisen Condensation? Formation of aceto-acetic-ester by the reaction of sodium ethoxide with ethyl acetate is called Claisen Condensation reaction or The Claisen Condensation reaction between Esters (containing α-hydrogens), in the presence of Bases such as sodium ethoxide, gives β-ketoesters via stabilized anion of the β-keto Ester.
Jun 21, 2024 · Aromatic aldehyde condense with aliphatic or mixed aryl alkyl ketone in presence of aqueous alkali to form α, β-unsaturated ketone, which is well known as Claisen-Schmidt condensation. Acetophenone and benzaldehyde react and form benzylideneacetophenone (chalcone) in presence of ethanol and NaOH.
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3 days ago · Aromatic polyketides, with their diverse structures and biological activities, have attracted significant scientific interest. Aromatization reactions are typically performed by aromatases and cyclases associated with bacterial type II polyketide synthases (PKSs) or product template and Claisen cyclase domains found in fungal type I nonreducing PKSs. Intriguingly, our recent study discovered a noncanonical aromatization mechanism involving a cupin domain-containing enzyme, StrC, in fungal ...
3 days ago · Studies of the reactions used in medicinal chemistry have found that a relatively small set of reactions, such as Suzuki–Miyaura coupling and amide bond formation, are overrepresented 69.
Jun 27, 2024 · Claisen reaction (Fig. 1A). This aldolytic reaction is thought to be catalyzed by the enzyme Sal (steroid aldolase), producing a free aldehyde which is then oxidized and re-esterified to produce a C 3 CoA-ester which can enter the second round of β-oxidation analogous to the pathway in Actinobacteria (Fig. 1A) (22).
1 day ago · Simple synthesis, excellent sensitivity and selectivity, and a quick fluorescence quench reaction to Fe 3+ over other metal cations are benefits of BTC that detect Fe 3+. The compound was synthesized with a good yield (73%) by the usual Claisen condensation method.
