(a)
Interpretation:
The major product for the given Diels-Alder reaction is to be predicted.
Concept introduction:
Diels-alder reaction is a cycloaddition reaction in which two molecules combine to form a new ring. In this type of reaction, syn addition takes place. It is a reaction between diene with a dienophile to yield a cyclohexene derivative. The dienophile adds to one side of the diene, and the diene adds to the one side of the dienophile. Thus, they have syn stereochemistry.
(b)
Interpretation:
The major product for the given Diels-Alder reaction is to be predicted.
Concept introduction:
Diels-alder reaction is a cycloaddition reaction in which two molecules combine to form a new ring. In this type of reaction, syn addition takes place. It is a reaction between diene with a dienophile to yield a cyclohexene. The dienophile adds to one side of the diene, and the diene adds to the one side of the dienophile. Thus, they have syn stereochemistry.
(c)
Interpretation:
The major product for the given Diels-Alder reaction is to be predicted.
Concept introduction:
Diels-alder reaction is a cycloaddition reaction in which two molecules combine to form a new ring. In this type of reaction, syn addition takes place. It is a reaction between diene with a dienophile to yield a cyclohexene. The dienophile adds to one side of the diene, and the diene adds to the one side of the dienophile. Thus, they have syn stereochemistry.
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Chapter 15 Solutions
Organic Chemistry (9th Edition)
- Predict the product of the following Diels-Alder reaction. Make sure to indicate stereochemistry whereverapplicable.arrow_forwardwhat is the product after these compumds undergo a diels-alder reactionarrow_forwardExplain the stereochemistry of the product of the Diels-Alder reaction shown below:arrow_forward
- Predict the product and then show mechanism. (Diels-alder reaction)arrow_forwardpredict the product of the Diels-Alder reaction below, taking stereochemistry into account if relevantarrow_forwardThe following diene does not undergo a Diels-Alder reaction with maleic anhydride, both in thermal and photochemical conditions. Explain why this reaction does not occur.arrow_forward
- Draw and discuss the mechanism (with arrows to show electron movements) of the Diels-Alder reaction between anthracene and maleic anhydride. Draw the orientation and phases of the reacting p-orbitals showing how they overlap in a “suprafacial” geometry to form productarrow_forwardRank the following dienes in order of increasing reactivity in a Diels-Alder reaction.arrow_forwardAlthough the Diels–Alder reaction generally occurs between an electronrich diene and an electron-deficient dienophile, it is also possible to have inverse-demand Diels–Alder reactions between suitable electrondeficient conjugated double bonds and electron-rich alkenes. These reactions are particularly useful because they allow for the incorporation of heteroatoms into the new six-membered ring. Predict the products of each inverse-demand Diels–Alder reaction below. Be sure your products reflect the correct stereochemistry. If more than one regioisomer is possible, draw both.arrow_forward
- The following triene undergoes an intramolecular Diels-Alder reaction to give a bicyclic product. Propose a structural formula for the product. Account for the observation that the Diels-Alder reaction given in this problem takes place under milder conditions (at lower temperature) than the analogous Diels-Alder reaction shown in Problem 20.34.arrow_forwardThe following compound can carry out the Diels-Alder reactionarrow_forwardDraw a product of the following reaction. Indicate the stereochemistry of the Diels-Alder product.arrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning