The below reaction is a retro Diels-Alder reactions. Is is the reverse process of a Diels-Alder reaction with the formation of a diene and dienophile from some cyclohexene. It can be accomplished spontaneously with heat. Determine the product of the reaction. A Heat
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- 2) Predict the major product for each Diels-Alder reaction. Include stereochemistry where appropriate. H. C=N (a) H H. CH3 CH;O, (b) Ph (c) Ph] Draw the structure of Diels-Alder cycloadduct formed via an endo 3. [a, transition state structure involving the diene and dienophile shown here. [b Formulate the endo transition structure that leads to the product. [c is observed. Does it correspond to a primary or a secondary KIE? Explain. [d. the 'inverse' variety? Explain. -CO2ET ]A KIE ] Is the KIE of the 'normal' orFuran and maleimide undergo a Diels–Alder reaction at 25 °C to give the endo isomer of the product. When the reactiontakes place at 90 °C, however, the major product is the exo isomer. Further study shows that the endo isomer of theproduct isomerizes to the exo isomer at 90 °C.furan: O maleimide:OON H(a) Draw and label the endo and exo isomers of the Diels–Alder adduct of furan and maleimide.(b) Which isomer of the product would you usually expect from this reaction? Explain why this isomer is usually favored.(c) Examine your answer to (b) and determine whether this answer applies to a reaction that is kinetically controlled orone that is thermodynamically controlled, or both.(d) Explain why the endo isomer predominates when the reaction takes place at 25 °C and why the exo isomer predominates at 90 °C
- For the Diels-Alder reactions show the major organic product. Be sure to show all stereochemistry where appropriate with wedged and dashed bonds. You do not need to show the mechanism. - HO IncBook AirWhich combination of reactants would undergo a Diels-Alder reaction the most quickly?Which one of the following dienophiles is most reactive in the Diels-Alder reaction? || ON OI = || ||| • IV LOCH 3 V
- Rank the following dienes from most reactive to least reactive in a Diels Alder reaction. please explain stepsDiels Alder Reactions. It is possible that there is no reaction.4.- Predict the product for each Diels-Alder reaction. Indicate stereochemistry where appropriate. स a) b) H3C, H3C + H3C CHO A ent 10 150 COOH + ·E· <- c) COOH BAS 5.- Retro Diels-Alder: show a combination of diene and dienophile that would result in each Diels-Alder adduct.
- b) Which of these dienophiles gives the FASTEST reaction with cyclopentadiene? CH2 CH2 A. | В. C. | D. | Give structures for the major Diels-Alder product of the following reactions: 1,3- cyclohexadiene and tetrachloroethene 1,3-cylcohexadiene and fumaric acid, the trans isomer of maleic acid с.Predict the regiochemical outcome (major product) for the following Diels-Alder reaction: anddich? [ Draw Your SolutionList two reasons that xylene is often used as solvent in Diels-Alder reactions.Calculate the theoretical yield, in gm, of product that can be produced using 10 gm ofanthracene and stoichiometric amount of maleic anhydride. I have the two reason but I need help with the theoretical yield can someone pls help!!