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Kk.27.
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- 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.A2 What is the inverse electron demand Diels–Alder reaction? Please pick a pair of a diene and a dienophile from the following dienes and dienophile that will undergo this type of reaction. Please show how this reaction works using Frontier Molecular Orbitals. What is the reaction product?Following is an example of a type of reaction known as a Diels-Alder reaction 1,3-Pentadiene Ethylene 3-Methylcyclohexene (a racemic mixture) The Diels-Alder reaction between a diene and an alkene is quite remarkable in that it is one of the few ways that chemists have to form two new carbon-carbon bonds in a single reaction. Given what you know about the relative strengths of carbon-carbon sigma and pi bonds, would you predict the Diels-Alder reaction to be exothermic or endothermic? Explain your reasoning.
- 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.9. For the following Diels-Alder products, propose the correct starting materials needed. D. a. b. C. fo{- ●●● Xox -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.
- 6) The Diels-Alder reaction of anthracene (which is achiral) and maleic anhydride (also achiral) results in the formation of an achiral product. This is not always the case (where two achiral reactants form an achiral product). a) Propose a Diels-Alder reaction where two achiral starting materials result in the formation of a chiral product. b) Would this chiral product be a single enantiomer or a racemic mixture?3. Predict the products of the following Diels-Alder reactions. a. NC a. 4. Identify the diene and dienophile used to make these Diel-Alder products. CN CH3 CN CH 3 CO₂CH3 CO₂CH3Chemistry Question
- 4. Predict the product for the following Diels-Alder reaction.2) Rank the following dienes in order of increasing rate of Diels-Alder reaction with maleic anhydride. You do not need to explain your ranking. H3C. H3CO Diene A Diene B Diene C1. Rank the following dienes from most to least reactive in a Diels-Alder reaction. Provide an explanation for each ranking.