Difference between revisions of "Education:ExampleProductA"

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[[File:ExampleProductA.png|250px|center]]
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[[File:ExampleProductA.png|200px|center]]
  
 
<big>INCORRECT!</big>
 
<big>INCORRECT!</big>
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;Position of attack
 
;Position of attack
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[[File:Green tick.png|15px|left]]
 
The methyl group directs the attack ortho/para, so this product (from para attack) is substituted at the correct position.
 
The methyl group directs the attack ortho/para, so this product (from para attack) is substituted at the correct position.
  
 
;Position of C=O
 
;Position of C=O
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[[File:Red x small.PNG|15px|left]]
 
The product of acylation should have the carbonyl C=O next to the ring.  This is because this group becomes the electrophile that attacks the ring.  The product A shown would need the methyl end of the chain to react as electrophile - very unlikely!
 
The product of acylation should have the carbonyl C=O next to the ring.  This is because this group becomes the electrophile that attacks the ring.  The product A shown would need the methyl end of the chain to react as electrophile - very unlikely!
  
 
[[Category:ChemSpider Education]]
 
[[Category:ChemSpider Education]]

Revision as of 23:17, 1 September 2010

ExampleProductA.png

INCORRECT!

Type of reaction

This is a Friedel-Crafts acylation, which is a type of electrophilic aromatic substitution that occurs on aromatic rings that are not strongly deactivated.

Position of attack
Green tick.png

The methyl group directs the attack ortho/para, so this product (from para attack) is substituted at the correct position.

Position of C=O
Error creating thumbnail: Unable to save thumbnail to destination

The product of acylation should have the carbonyl C=O next to the ring. This is because this group becomes the electrophile that attacks the ring. The product A shown would need the methyl end of the chain to react as electrophile - very unlikely!