I've been given two reactants (a diene and a larger dienophile) in acidic conditions and decided to use a Diels Alder mechanism.  Anyway, my product is a cylcohexene with 2 carboxyl groups, one on the 4 and the other on the 5 carbon (C8H10O4).

My first question is what is this molecules's name (systematic or common)?  I've tried searching goolge for 4,5-dicarboxyl-cyclohexene, 4,5-dicarboxyl-1-cyclohexene, 4,5-dicarboxylic-cyclohexene, and 4,5-dicarboxylic-1-cyclohexene, but have gotten no hits.

My second question is would this molecule be stable with the Oxygens of the carboxyl groups so close to one another?

I would prefer not to post the exact starting materials, this is an assignment and I just want to know if my product is stable and what its name is.  Thanks a lot.

Also, is there any program that could give me the NMR spectrum of an inputed molecule?

Thank you for responding.

Wouldn't the acidic conditions prevent the cyclic intramolecular anhydride from forming?  I was considering the same thing but I figured it wouldn't since the final molecule had to maintain the same formula - C8H10O4.

Also, is there any program that could give me the NMR spectrum of an inputed molecule?

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