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Reaction Scheme

I am having trouble understanding how this reaction works or how an electrophile is formed. I feel like the product should be something like $$\ce{C11H12O4}$$

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    $\begingroup$ This looks like a Friedel-Crafts acylation to me. Maybe it all becomes clear after visiting the Wikipedia page. $\endgroup$ – tschoppi Feb 11 '14 at 14:29
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Nice! You've brought everything you need.

If you can't identify your electrophile immediately, do it the other way around: Assign function to all components. The one that is left must be your electrophile - or its precursor.

Do you remember the role of $\ce{AlCl3}$ in electrophilic aromatic substitutions? Where could it possible attack here?


Here is another hint: What is the trivial name for dihydrofuran-2,5-dione?

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    $\begingroup$ I got it thanks, I didn't think about the ring coming apart! $\endgroup$ – user115862 Feb 11 '14 at 20:37
  • $\begingroup$ @user115862 Excellent! If you like, you can even post the answer to your question. $\endgroup$ – Klaus-Dieter Warzecha Feb 11 '14 at 20:51

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