Alpha Carbons

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Last updated 2:38 PM on 4/22/26
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30 Terms

1
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H3O+ or OH-

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<p>The double bond reforms at the _ substituted carbon.</p>

The double bond reforms at the _ substituted carbon.

NH2-

most

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<p>The double bond reforms at the _ substituted carbon.</p>

The double bond reforms at the _ substituted carbon.

LDA

least

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Br2, H3O+

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Br2, OH-

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  1. Excess Br2 and OH-

  2. OH-

Only works for methyl ketones

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OH-

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  1. LDA

  2. Br-ethyl

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  1. LDA

  2. Br-ethyl

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<p>(109)</p>

(109)

  1. LDA

  2. Br-CH3

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  1. NH2-

  2. Br-CH3

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<p>1/3</p>

1/3

  1. NaOEt (mild base)

  2. C2-Br

  3. H3O+

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<p>2/3</p>

2/3

  1. NaOEt (mild base)

  2. methylbenzene

  3. H3O+

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<p>3/3</p>

3/3

  1. NaOEt (mild base)

  2. Br-C

  3. NaOEt (mild base)

  4. Br-methylbenzene

  5. H3O+

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  1. NaOEt (mild base)

  2. methylbenzene

  3. H3O+

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  1. NaOEt (mild base)

  2. Br-C

  3. NaOEt (mild base)

  4. Br-methylbenzene

  5. H3O+

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<p>(111) 1/2</p>

(111) 1/2

NaOH

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<p>2/2</p>

2/2

NaOH

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<p>1/3</p>

1/3

NaOH, heat

If you want to do this mechanism between two different reactants, make sure one of them doesn’t have an alpha carbon.

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<p>2/3</p>

2/3

NaOH, heat

If you want to do this mechanism between two different reactants, make sure one of them doesn’t have an alpha carbon.

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<p>3/3</p>

3/3

NaOH, heat

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  1. LDA (prevents molecules from interacting with each other)

  2. picture

<ol><li><p>LDA (prevents molecules from interacting with each other)</p></li><li><p>picture</p></li></ol><p></p>
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NaOEt

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NaOEt, heat

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<p>R = nucleophile</p>

R = nucleophile

nucleophile

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knowt flashcard image
27
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<p>1/2 (116)</p>

1/2 (116)

(CH3)2CuLi, (aqueous workup)

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<p>2/2 </p>

2/2

  1. (CH3)2CuLi

  2. Br-CH3 before aqueous workup

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<p>1/2 118 practice 119</p>

1/2 118 practice 119

NaOH, heat

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<p>2/2 188 practice 119</p>

2/2 188 practice 119

NaOH, heat