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Russel's lectures (AROMATICITY) > Aromaticity 3 > Flashcards

Aromaticity 3 Flashcards

1
Q

Why is the friedal crafts alkylation reaction a two step process?

A

Two steps because the water being added on the second step may react with the AlCl3

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2
Q

What electrophile is generated from the Acylation reaction in friedal crafts reaction?

A

Acylium ion

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3
Q

What reagents are used in the Clemmensen Reduction reaction?

A

Zn/Hg, HCl

EtOH, 79 degrees for 24hr

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4
Q

What is removed in the Clemmensen Reduction reaction?

A

Carbonyl

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5
Q

What reagents are used in the Wolf-Kishner reaction?

A

NH2-NH2

KOH/200 degrees

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6
Q

What is removed in the Wolf-Kishner reaction?

A

Carbonyl

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7
Q

What products does Acylation, Clemmesen or Wolf-kishner reaction from?

A

Alkylation products

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8
Q

Different groups on the benzene ring influence the position of subsequent reactions. TRUE OR FALSE?

A

TRUE

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9
Q

Mono substituted benzene react to give ortho or para product will have slower reaction than that seen for the substitution upon benzene. TRUE OR FALSE?

A

FALSE

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10
Q

Mono substituted benzene react to give Meta product will have a slower reaction than that seen for the substitution upon benzene. TRUE OR FALSE?

A

TRUE

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11
Q

Are Ortho and Para substituents activating or deactivating groups?

A

Activating

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12
Q

Is Meta substituent Activating or deactivating group?

A

Deactivating

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13
Q

What are EDGs?

A

Electron donating groups

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14
Q

What are EWGs?

A

Electron withdrawing groups

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15
Q

Give examples of Ortho and para substituents?

A

NH2, OH, OR, ALKYL

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16
Q

Give examples of Meta substituents?

A

SO2OH, NO2, CN , -COR

17
Q

Why do Meta directing substituents reactions slower?

A

Because they have EWGs

18
Q

Which one has higher Transition state, Para or meta?

A

Meta

19
Q

How many resonance form does Meta and para form?

A

Meta - 3

Para - 4 - due to hyperconjugation

20
Q

What is one drawback from O/P directing effects?

A

More than one product is formed and therefore will require a purification step i.e crystallization or distillation

Russel's lectures (AROMATICITY) (8 decks)

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