Friedel–Crafts Acylation (AQA A-Level Chemistry): Quizzes

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Friedel–Crafts Acylation
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What is the general formula of an acyl group?

RCO−RCO-

What type of reaction is Friedel-Crafts acylation?

Electrophilic substitution

Which catalyst is used in Friedel-Crafts acylation?

AlCl3AlCl₃ (Lewis acid)

What functional group is produced in Friedel-Crafts acylation?

Ketone

What is the electrophile in Friedel-Crafts acylation?

Acylium ion (RCO+RCO⁺)

How many steps are in the Friedel-Crafts acylation mechanism?

Four steps

What regenerates the AlCl3AlCl₃ catalyst in the final step?

H+H⁺ reacting with AlCl4−AlCl₄⁻

Why can't formyl chloride be used in Friedel-Crafts acylation?

It decomposes to COCO and HClHCl

Why doesn't acylation have carbocation rearrangement issues?

Acylium ion is stabilized by resonance

Why are aryl amines unsuitable for Friedel-Crafts acylation?

They form unreactive complexes with catalyst

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