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Reactions of Aromatic Compounds - Examples of Ar-SE Reaction

Exercises: Friedel-Crafts Acylation

Instruction : Exercise 1

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Fig.1

Instruction : Exercise 2

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Fig.2

Instruction : Exercise 3

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Fig.3

Exercise

Friedel-Crafts acylation yields an acylated aromatic compound, which is also complexed by the ...

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... enzyme.

... product.

... catalyst.

... starting product.

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Exercise

A variation of Friedel-Crafts acylation is the application of ...

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... a carbonic acid protonated by a mineral acid.

... a carboxylic acid protonated by a mineral acid.

... nitrous acid protonated by a mineral acid.

... a carboxylic acid anhydride protonated by a mineral acid.

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Exercise

Compared to the polarized Lewis acid-acyl halide complexes in Friedel-Crafts acylation, ...

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... the anions that arise from the protonation of carboxylic acids by a mineral acid react analogously.

... the cations that arise from the protonation of carboxylic acids by a mineral acid react completely differently.

... the cations that arise from the protonation of carboxylic acids by a mineral acid react analogously.

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Exercise

In contrast to the additionally activating Friedel-Crafts alkylation, the introduction of an acyl substituent through the Friedel-Crafts acylation results in a deactivation of the aromatic compound. Therefore, multiple acylation ...

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... easily occurs.

... only occurs when the Lewis acid AlCl3 is applied as a catalyst.

... is prevented.

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Exercise

In Friedel-Crafts acylation, the isomerization that is cumbersome in Friedel-Crafts alkylation ...

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... does not occur.

... always occurs.

... often occurs.

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Exercise

Aromatic compounds with terminal linear alkyl substituents, which cannot be produced by Friedel-Crafts alkylation, ...

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... cannot be synthesized by Friedel-Crafts acylation, too.

... may be synthesized by Friedel-Crafts acylation and subsequent oxidation of the carbonyl group.

... may be synthesized by Friedel-Crafts acylation and subsequent reduction of the carbonyl group.

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Exercise

In the case of acylium ions that can be decarbonylated relatively easily, since decarbonylation yields a considerably stabilized carbenium ion, instead of Friedel-Crafts acylation, ...

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... an alkylation of the aromatic compound by a carbanion occurs.

... an alcoholation of the aromatic compound by the carbenium ion occurs.

... an alkylation of the aromatic compound by the carbenium ion occurs.

... an alkenylation of the aromatic compound by the carbenium ion occurs.

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