Carbonyl Mechanisms: Elimination (1,2-Elimination)

Carbonyl Mechanisms: Elimination (1,2-Elimination)

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If the  [1,2] addition is the most important mechanism for carbonyls, then the #2 most important reaction has got to be [1,2]-elimination. This step is just the [1,2]-addition in reverse, except you're expelling a leaving group from a tetrahedral carbon to give you back a new π bond (i.e. a carbonyl).

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Carbonyl Mechanisms: Elimination (1,2-Elimination)

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Peterson olefination - Wikipedia

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Beta-Elimination - an overview

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Addition-elimination condensation reactions of aldehydes ketones identification with 2,4-dinitrophenylhydrazine 24DNPH equations reagents advanced A level organic chemistry revision notes doc brown

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Elimination reaction

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Solved CI ?? 1. excess NH3 NH4CI NH2 ?? 2. + H2N d = SN2

https://cdn.masterorganicchemistry.com/wp-content/uploads/2022/12/2398-Reverse-haloform-elimination-step.gif

Carbonyl Mechanisms: Elimination (1,2-Elimination)

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Carbonyl Mechanisms: Elimination (1,2-Elimination)

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4.1: β-Elimination Reactions - Chemistry LibreTexts

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Addition-elimination condensation reactions of aldehydes ketones identification with 2,4-dinitrophenylhydrazine 24DNPH equations reagents advanced A level organic chemistry revision notes doc brown