Concept explainers
(a)
Interpretation: The product for the given intramolecular Diels-Alder reaction is to be drawn.
Concept introduction: A chemical reaction that involves
Curved arrows aid in determining the movement and flow of electrons in the reaction. The electrons that take part in the
(b)
Interpretation: The product for the given intramolecular Diels-Alder reaction is to be drawn.
Concept introduction: A chemical reaction that involves
Curved arrows aid in determining the movement and flow of electrons in the reaction. The electrons that take part in the chemical reactions are shown by the curved arrows.
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ORGANIC CHEMISTRY W/CONNECT PKG
- Rank the following dienes in their rate of reaction with the same dienophile in a Diels-Alder reaction. For example, 1 = fastest or most reactive diene, 4 = slowest or least reactive diene.arrow_forwardIntramolecular Diels–Alder reactions are possible when a substrate contains both a 1,3-diene and a dienophile, as shown in the following general reaction.With this in mind, draw the product when each compound undergoes an intramolecular Diels–Alder reaction.arrow_forwardRank the following dienophiles in their rate of reaction with the same diene in a Diels-Alder reaction. For example, 1 = fastest or most reactive dienophile, 4 = slowest or least reactive dienophile.arrow_forward
- (A) Which triene has the smallest heat of hydrogenation? Explain why. (B) Which triene can be reactive in the Diels-Alder reaction? (C) Which triene is the most reactive in the Diels-Alder reaction?arrow_forwardWhich dienophile in each pair is more reactive in a Diels–Alder reaction?arrow_forwardRank the following dienes in order of increasing reactivity in a Diels-Alder reaction.arrow_forward
- Show that the [4 + 2] Diels–Alder reaction is photochemically forbidden.Parrow_forwardWith this in mind, draw the product when each compound undergoes anintramolecular Diels–Alder reactionarrow_forwardA transannular Diels–Alder reaction is an intramolecular reaction that occurs when the diene and dienophile are contained in one ring, resulting in the formation of a tricyclic ring system. Draw the product formed when the following triene undergoes a transannular Diels–Alder reaction.arrow_forward
- Which of the following are correct? Correct any false statements. a. A conjugated diene with an even number of double bonds undergoes conrotatory ring closure under thermal conditions. b. A conjugated diene with an antisymmetric HOMO undergoes conrotatory ring closure under thermal conditions. c. A conjugated diene with an odd number of double bonds has a symmetric HOMO.arrow_forwardDetermine what conjugated diene and what dienophile wereused to make starting materials from a given Diels–Alder adduct ?arrow_forwardWhich diene is more reactive in a Diels–Alder reaction?arrow_forward
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