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Friedel-Crafts Reaction
Friedel-Crafts Reaction
12
Organic Chemistry
Undergraduate 2
09/23/2019

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Cards

Term
the 2 types of rxns in Friedel-Crafts rxn
Definition
-alkylation
-acylation
Term
alkylation
Definition
adding an alkyl (R) group
Term
general rxn for Friedel-Crafts alkylation
Definition
[image]
Term
first step in Friedel-Crafts alkylation
Definition
forming the electrophile
Term
2 cases to worry about regarding the formation of the electrophile in Friedel-Crafts alkylation
Definition
-methyl or primary, secondary or tertiary
-whether or not we're adding a secondary or tertiary alkyl halide
Term
the type of carbocation that won't exist very long in Friedel-Crafts rxn
Definition
methyl or primary
Term
what to watch out for when you do Friedel-Crafts alkylation
Definition
-possible rearrangements
-methyl and primary form complex with Lewis acid, NOT carbocation
Term
what methyl and primary alkyl groups do with Lewis acids
Definition
form a complex, NOT a carbocation
Term
Friedel-Crafts acylation
Definition
forms acylium ion, adds only once

uses acid halide to add to the ring
Term
why Friedel-Crafts acylation adds only once
Definition
because it deactivates the ring
Term
how the intermediate for Friedel-Crafts acylation is formed
Definition
[image]
Term
general mechanism for Friedel-Crafts acylation
Definition
[image]
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