Organic Chemistry (6th Edition)
6th Edition
ISBN: 9781260119107
Author: Janice Gorzynski Smith
Publisher: McGraw Hill Education
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Chapter 14, Problem 58P
A 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.
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Write a general rule that can be used to predict the major product of a Diels–Alder reaction between an alkene with an electron-withdrawing substituent and a diene with a substituent that can donate electrons by resonance depending on the location of the substituent on the diene.
Diels—Alder reaction of a monosubstituted diene (such as CH2 = CH – CH = CHOCH3) with a monosubstituted dienophile (such as CH2 = CHCHO) gives a mixture of products, but the 1,2-disubstituted product often predominates. Draw the resonance hybrid for each reactant and use the charge distribution of the hybrids to explain why the 1,2-disubstituted product is the major product.
Chapter 14 Solutions
Organic Chemistry (6th Edition)
Ch. 14.1 - Prob. 2PCh. 14.2 - Problem 16.3 Draw a second resonance structure for...Ch. 14.2 - Prob. 4PCh. 14.2 - Problem 16.5 Farnesyl diphosphate is synthesized...Ch. 14.3 - Prob. 6PCh. 14.4 - Prob. 7PCh. 14.4 - Prob. 8PCh. 14.8 - Problem 16.12 Using hybridization, predict how the...Ch. 14.8 - Problem 16.13 Use resonance theory to explain why...Ch. 14.9 - Prob. 15P
Ch. 14.9 - Prob. 16PCh. 14.10 - Problem 16.17 Draw a stepwise mechanism for the...Ch. 14.11 - Prob. 19PCh. 14.12 - Problem 16.19 Draw the product formed when each...Ch. 14 - Prob. 32PCh. 14 - 16.31 Which of the following systems are...Ch. 14 - 16.32 Draw all reasonable resonance structures for...Ch. 14 - Prob. 35PCh. 14 - 16.35 Explain why the cyclopentadienide anion A...Ch. 14 - Prob. 38PCh. 14 - 16.37 Draw the structure of each compound.
a. in...Ch. 14 - 16.41 Draw the products formed when each compound...Ch. 14 - Prob. 44PCh. 14 - 16.43 Treatment of alkenes A and B with gives the...Ch. 14 - 16.44 Draw a stepwise mechanism for the following...Ch. 14 - Prob. 47PCh. 14 - 16.57 A transannular Diels–Alder reaction is an...Ch. 14 - Draw a stepwise mechanism for the following...Ch. 14 - Prob. 62PCh. 14 - Prob. 63PCh. 14 - Prob. 64PCh. 14 - Prob. 65PCh. 14 - 16.65 The treatment of isoprene with one...
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- Diels–Alder reaction of a monosubstituted diene (such as CH2=CH–CH=CHOCH3) with a monosubstituted dienophile (such as CH2=CHCHO)gives a mixture of products, but the 1,2-disubstituted product oftenpredominates. Draw the resonance hybrid for each reactant, and use thecharge distribution of the hybrids to explain why the 1,2-disubstitutedproduct is the major product.arrow_forwardA possible side reaction is butadiene reacts with another butadiene via a Diels‐Alder reaction. Draw the structure of that product.arrow_forwardDiels–Alder reaction of a monosubstituted diene (such as CH2=CH– CH=CHOCH3) with a monosubstituted dienophile (such as CH2=CHCHO) gives a mixture of products, but the 1,2-disubstituted product often predominates. Draw the resonance hybrid for each reactant, and use the charge distribution of the hybrids to explain why the 1,2-disubstituted product is the major product.arrow_forward
- Consider the four trienes E–H. Which compound is most reactive in the Diels–Alder reaction?arrow_forwardRank 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_forwardWhich diene is more reactive in a Diels–Alder reaction? CH2=CHCH=CHOCH3 or CH2=CHCH=CHCH2OCH3arrow_forward
- What kind of compounds are prepared using the Diels Alder reaction?arrow_forwardLabel each diene as reactive or unreactive in a Diels–Alder reaction.arrow_forwardMechanism The Diels-Alder reaction is part of a class of reactions known as a cycloaddition reaction. This reaction is specifically a [4+2] cycloaddition which is a concerted (one-step) process in which two new carbon - carbon sigma bonds are formed from two pi bonds. For the first Diels - Alder step of the mechanism fill in the arrows needed for the transformation. The rest of the mechanism is drawn for you. OH Show mechanism arrows for this step! 4 + 2 cycloaddition OH H D- & H+ transfer OH Nuc acyl substitution H L.G.arrow_forward
- The Diels–Alder Reaction – A [4+2] Cycloaddition Experiment. During the experiment we used Maleic Anhydride and Furan. Draw a mechanism for the [4+2] cycloaddition.arrow_forwardDraw the reactants that would be used to form this cyclohexene derivative in a Diels- Alder reaction. Include any relevant stereochemical configurations. Draw Diene + ·00 aarrow_forwardWhen heated, allyl aryl ethers and allyl vinyl ethers undergo a reaction called a Claisen rearrangement, a concerted reorganization of bonding electrons similar to the Diels-Alder reaction. The reaction proceeds through a six-membered, cyclic transition state. Draw the structure of the expected product when this compound undergoes a Claisen rearrangement. You do not have to consider stereochemistry. For the purposes of this problem, assume that double bonds in an aromatic ring are localized at the positions indicated in the figure. Include isomerization to a phenol IF appropriate.arrow_forward
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