Diels-Alder Reaction: Predict Product | 65 Characters

  • Thread starter Thread starter thE3nigma
  • Start date Start date
  • Tags Tags
    Reaction
Click For Summary

Discussion Overview

The discussion revolves around the Diels-Alder reaction, specifically predicting the product of a reaction involving a diene and methyl butyrate (later corrected to methyl 2-butenoate). Participants explore the stereochemistry and structural aspects of the reactants and products.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant questions whether methyl butyrate is a dienophile, suggesting it may not be appropriate in this context.
  • Another participant corrects the name of the molecule to methyl 2-butenoate, noting the presence of a double bond between the second and third carbon after the COO- group.
  • There is a question about whether the diene is cyclic and the stereochemistry of methyl 2-butenoate, with one participant asserting it is Z.
  • A later reply states that the term "endo" is not applicable in this case and suggests that both the methyl ester and the methyl group should be oriented in a syn fashion.

Areas of Agreement / Disagreement

Participants express differing views on the appropriateness of the dienophile and the use of the term "endo." There is no consensus on the correct stereochemical representation or the classification of the reactants.

Contextual Notes

There are unresolved questions regarding the definitions of the reactants and the implications of their stereochemistry. The discussion reflects varying interpretations of the Diels-Alder reaction framework.

thE3nigma
Messages
64
Reaction score
0
Hi,

This is not a homework question but something I found within my textbook. I just wanted to understand a solution they gave to the problem.

The question is:
Predict the product of the following Diels-Alder reaction:

The structures of two molecules, a diene (4 carbons long) and a methyl butyrate (methyl butanoate).

The answer has the methyl ester and H atom popping out of the book. I just wanted to confirm that it would not be wrong if it was drawn with the methyl ester and H atom going into the book would it? I do not think this is an endo substituent in this case.
 
Last edited:
Physics news on Phys.org
Is methyl butyrate a dienophile? Not in my books.
 
Sorry, I misspelled the molecules name. It is methyl 2-butenoate (I believe that is the correct name). There is a double bond between the second and third carbon after the COO- group.
 
... and is the diene cyclic? Is that methyl-2-butenoate E or Z?
 
It is Z, the diene is not cyclic.
 
Endo isn't the right term to use in this system. http://www.iupac.org/goldbook/E02094.pdf"

Both the methyl ester and the methyl group should be either up or down... syn fashion.
 
Last edited by a moderator:

Similar threads

Diels-Alder Reaction: A Simple Explanation?
  • · Replies 2 ·
Replies
2
Views
2K
Diels-Alder Rxn of cis-Butadiene & Maleic Anhydride
  • · Replies 2 ·
Replies
2
Views
6K
What will be the product of this organic reaction?
  • · Replies 28 ·
Replies
28
Views
5K
What are the potential products of the reaction between acetylene and HOCl?
  • · Replies 6 ·
Replies
6
Views
2K
'diels alder' like reaction with nonconjugated dienes
  • · Replies 3 ·
Replies
3
Views
3K
Predict the product of the following reactions:
  • · Replies 2 ·
Replies
2
Views
5K
OChem Tosylation Reaction: Predicting Major Product with p-TsOH Catalyst
  • · Replies 5 ·
Replies
5
Views
2K
Ochem: H2O & HBr Reactions 2nd Semester Organic Chemistry
  • · Replies 1 ·
Replies
1
Views
6K
Number of Major Products in the Reaction of Trans-3,4-Dimethyl-3-Heptene and HCl
  • · Replies 1 ·
Replies
1
Views
1K
E2 elimination of (E) and (Z) Acids?
  • · Replies 1 ·
Replies
1
Views
4K