Benzene & Aromatic Chemistry

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1.
Why is Friedel-Crafts acylation preferred over alkylation for introducing a -CH2CH3 group? **Back:** Acylation avoids carbocation rearrangement and polyalkylation; the acyl group is then reduced
2.
Aniline cannot undergo Friedel-Crafts reaction because:
3.
Nitration of chlorobenzene gives mainly: ```smiles Clc1ccccc1 ``` Chlorobenzene
4.
The rate of EAS for the following compounds is:
5.
The electrophile in Friedel-Crafts alkylation with CH3Cl/AlCl3 is:

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