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The product is the alkoxide salt of the aldol product. The aldol itself is then formed, and it may then undergo dehydration to give the unsaturated carbonyl compound. The scheme shows a simple mechanism for the base-catalyzed aldol reaction of an aldehyde with itself. Simple mechanism for base-catalyzed aldol reaction of an aldehyde with itself
The product is the alkoxide salt of the aldol product. Then aldol, the aldol addition product itself is then formed. After which it may undergo dehydration to give a unsaturated carbonyl compound, the aldol condensation product. The scheme shows a simple mechanism for the base-catalyzed aldol reaction of an aldehyde with itself.
In organic chemistry, an aldol is a structure consisting of a hydroxy group (-OH) two carbons away from either an aldehyde or a ketone. The name combines the suffix 'ol' from the alcohol and the prefix depending on the carbonyl group , either 'ald' for an aldehyde, or 'ket' for a ketone, in which case it referred to as a 'ketol'.
The aldol addition product can be dehydrated via two mechanisms; a strong base like potassium t-butoxide, potassium hydroxide or sodium hydride deprotonates the product to an enolate, which eliminates via the E1cB mechanism, [9] [10] while dehydration in acid proceeds via an E1 reaction mechanism.
The Mukaiyama aldol addition is a Lewis acid-mediated addition of enol silanes to carbonyl ... The desired product, a racemate of 2 and 3, is obtained by aqueous work ...
Sodiumborohydride reduction of the primarily formed aldol products gave the corresponding alcohols in good yield and excellent enantioselectivity in the ratio of P N /P O =>99:1 as shown in the Scheme below. Wong suggests that the reaction mechanism of the (S)-Cat catalyzed N-nitroso aldol reaction between nitrosobenzene and butanal proceeds ...
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Robinson annulation is one notable example of a wider class of chemical transformations termed Tandem Michael-aldol reactions, that sequentially combine Michael addition and aldol reaction into a single reaction. As is the case with Robinson annulation, Michael addition usually happens first to tether the two reactants together, then aldol ...