Interpretation:
The
Concept introduction:
Aromatic compounds that contain an ortho and para directing substituent groups (except halogens) are more reactive than benzene and that contain a meta directing substituent group are less reactive than benzene. Halogens are ortho & para directing yet deactivating groups. Hence the halogen substituted benzenes are less reactive than benzene.
As an exception, the aromatic rings that are either substituted by a strongly electron-withdrawing groups such as carbonyl or basic amino group that can be protonated do not react in Friedal crafts reaction, as they deactivate the ring.
To rank:
The aromatic compounds bromobenzene, toluene, phenol, aniline, nitrobenzene and p-bromotoluene in the expected order of their reactivity towards Friedal-Crafts alkylation. Further to state which of them are unreactive.
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Chapter 16 Solutions
OWLv2 with Student Solutions Manual eBook, 4 terms (24 months) Printed Access Card for McMurry's Organic Chemistry, 9th
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- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning