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  2. Aldol condensation - Wikipedia

    en.wikipedia.org/wiki/Aldol_condensation

    The mechanism for base-catalyzed aldol condensation can be seen in the image below. A mechanism for aldol condensation in basic conditions, which occurs via enolate intermediates and E1CB elimination. The process begins when a free hydroxide (strong base) strips the highly acidic proton at the alpha carbon of the aldehyde.

  3. Aldol reaction - Wikipedia

    en.wikipedia.org/wiki/Aldol_reaction

    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 Although only a catalytic amount of base is required in some cases, the more usual procedure is to use a stoichiometric amount of a strong base such as LDA or NaHMDS .

  4. Aldol reactions - Wikipedia

    en.wikipedia.org/wiki/Aldol_reactions

    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. Base-catalyzed aldol reaction. Simple mechanism for base-catalyzed aldol reaction of an aldehyde with itself. Base-catalyzed dehydration

  5. Proline-catalyzed aldol reactions - Wikipedia

    en.wikipedia.org/wiki/Proline-catalyzed_aldol...

    The Hajos–Parrish–Eder–Sauer–Wiechert and Barbas-List [1] reactions in organic chemistry are a family of proline-catalysed asymmetric aldol reactions.. In the 1970s, two research groups discovered (and published) almost simultaneously their discoveries of two related intramolecular reactions: Zoltan Hajos and David Parrish at Hoffmann-La Roche [2] [3] and Rudolf Wiechert et al at ...

  6. Perkin reaction - Wikipedia

    en.wikipedia.org/wiki/Perkin_reaction

    The Perkin reaction is an organic reaction developed by English chemist William Henry Perkin in 1868 that is used to make cinnamic acids.It gives an α,β-unsaturated aromatic acid or α-substituted β-aryl acrylic acid by the aldol condensation of an aromatic aldehyde and an acid anhydride, in the presence of an alkali salt of the acid.

  7. Darzens reaction - Wikipedia

    en.wikipedia.org/wiki/Darzens_reaction

    These two steps are similar to a base-catalyzed aldol reaction. The oxygen anion in this aldol-like product then S N 2 attacks on the formerly-nucleophilic halide-bearing position, displacing the halide to form an epoxide. [2] This reaction sequence is thus a condensation reaction since there is a net loss of HCl when the two reactant molecules ...

  8. Oppenauer oxidation - Wikipedia

    en.wikipedia.org/wiki/Oppenauer_oxidation

    A common side-reaction of the Oppenauer oxidation is the base-catalyzed aldol condensation of aldehyde product, which have α-hydrogens to form either β-hydroxy aldehydes or α, ß-unsaturated aldehydes. [13] An Oppenauer oxidation of aldehyde

  9. Mukaiyama aldol addition - Wikipedia

    en.wikipedia.org/wiki/Mukaiyama_aldol_addition

    Mukaiyama aldol in taxol synthesis. and a second one with an amine chiral ligand and a triflate salt catalyst: Mukaiyama asymmetric aldol taxol. Utilization of chiral Lewis acid complexes and Lewis bases in asymmetric catalytic processes is the fastest-growing area in the usage of the Mukaiyama aldol reaction. [3]