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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: VictorNova on April 17, 2023, 05:51:18 PM

Title: Diels-Alder: Exo vs Endo and Matched vs Mismatched
Post by: VictorNova on April 17, 2023, 05:51:18 PM
While working on this lab report thing, I came across this issue. I've been having trouble distinguishing between how to draw endo vs exo when drawing organic structures and I don't get what is being asked regarding matched and mismatched. Could anyone help explain it to me?
Here's the problem in question:
(https://preview.redd.it/01kr04wlehua1.png?width=960&crop=smart&auto=webp&v=enabled&s=82120073a1e858c40d9abb26c02f44e3a7683cad)
Title: Re: Diels-Alder: Exo vs Endo and Matched vs Mismatched
Post by: spirochete on April 20, 2023, 08:26:17 PM
I am not familar with this term, but maybe mismatched refers to the 1,3 isomer, which is the disfavored constitutional isomer that might form as a minor product? The major product should have a 1,2 relationship between the methoxy group and the ester group in this case.