QUESTION 9Why would the compound below not react with a dienophile in a Diels-Alder reaction?The compound cannot adopt the s-cis conformation.There are no electron withdrawing groups on the compound.There are no electron donating groups on the compound.The compound is not a conjugated diene.0000QUESTION 10Which of the following is not a feature of the Diels-Alder reaction?They form new six-membered rings.They are initiated by peroxides.Three TT bonds break.They are concerted.

Question 9: The compound in question is a diene, which means it has two double bonds. However, it…

Answered: QUESTION 9 Why would the compound below…

Organic Chemistry

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Chapter14: Conjugated Compounds And Ultraviolet Spectroscopy

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Problem 41AP: Although the Dielsâ€“Alder reaction generally occurs between an electronrich diene and an...

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Mechanism 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.
Exp3: Diels-Alder reaction Why does cyclopentadiene regularly form a dimer? How to break the dimer into monomers? Does the diene in this reaction act as the nucleophile or the electrophile? Is the maleic anhydride a nucleophile or an electrophile in this reaction? Explain your reasoning.
Question 11 of 30 > Identify the diene and dienophile that will yield the given product in a Diels-Alder reaction, and identify the second major product of the reaction, by dragging the appropriate structures to the boxes. O Macmillan Learning Diene: Dienophile: H3CO (CH3)3 SIO OSI(CH3)3 (CH3)3SIO OCH 3 (CH3)3SIO A OCH 3 OCH 3 product 2 not listed CH3 NO₂ (CH3)3SIO |||| CH3 NO₂ Product 1 OCH3 Answer Bank (CH3)3SIO (CH3)3 SIO NO₂ CH3 OCH 3 علم + CH3 .NO₂ CH3 Product 2 H3C (CH3)3SIO کمل کر OCH 3 no second product CH3 INO₂ NO₂
10. The following compound was produced in a Diels-Alder reaction. COOH a) How many sp³ hybridized carbons are in this molecule? b) Is this molecule chiral? c) Are the carboxylic acid substituents electron donating group or electron withdrawing group? d) Draw the diene and dienophile which would react together to give this product.
True or False: Acetylene is a naturally occurring conjugated diene True or False: The Diels-Alder reaction has the stereochemistry of the dienophile is retained in the product. True or False: When looking at kinetic vs. thermodynamic products the kinetic product predominates at low temperature. True or False: the mechanism of the Diels-Alder reaction is three π bonds break; one σ bond and two π bonds form.
Compounds P and Q can undergo a Diels-Alder reaction to form two regioisomeric products R and S as shown in Figure 5. OMe O C8H12O2 R C8H12O2 S Figure 5 Draw the chemical structures of regioisomeric compounds R and S. Using possible resonance contributors of P and Q predict which of the two regioisomers will be favoured in the reaction. Using curly arrows, draw the mechanism for the reaction of P and Q to form the dominant regioisomer you have predicted in your answer to part (ii) above.
For the Diels-Alder reaction, identify the diene, the dienophile, and the Diels-Alder adduct. H3CO. R OCH3 LOCH3 R H3CO R compound A compound B compound C Compound A is a: Compound B is a: Compound C is a:
6. Predict the major product for the following Diels-Alder reaction. 7. Which diene and dienophile would react to give the following Diels-Alder product? Сон 8. Which diene and dienophile would react to give the following Diels-Alder product? Ill
Consider the four trienes E–H. Which compound is most reactive in the Diels–Alder reaction?
Which statement incorrectly describes the Diels-Alder reaction shown below? H. + Н. The reaction would be faster if the diene were substituted with an electron donating group. The product is not expected to be enantiomerically pure. The expected major products of this reaction have two chiral center. The expected major product is a cyclohexene derivative The reaction would be faster if the dienophile were substituted with electron donating groups.
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.
Which of the following diene(s) cannot undergo the Diels-Alder reaction? II IV %3D

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