Difference between revisions of "Education:ExampleProductB"

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[[File:ExampleProductB.png|200px|center]]
 
[[File:ExampleProductB.png|200px|center]]
  
<big>INCORRECT!</big>
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<span style="color:red"><big>'''INCORRECT!'''</big></span>
  
 
;Type of reaction
 
;Type of reaction
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;Position of C=O
 
;Position of C=O
 
[[File:Red x small.PNG|15px|left]]
 
[[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!
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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 B shown would need the methyl end of the chain to react as electrophile - very unlikely!
  
 
[[Category:ChemSpider Education]]
 
[[Category:ChemSpider Education]]

Latest revision as of 00:18, 2 September 2010

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

Position of C=O
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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 B shown would need the methyl end of the chain to react as electrophile - very unlikely!