2) A Diels-Alder reaction yields the following compound. Please write the structure of diene and dienophile, and synthesize the dienophile from a starting material with no more than four carbon. "CO₂Et
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- A) Write the mechanism and predict the products for the following reaction. Label each product as the thermodynamic product or the kinetic product. Write a few sentences explaining which product would predominate at low temperature and which would predominate at high temperature and explain the reason for this result. HBr ABd B) Choose reagents that would give the following product in a Diels-Alder reaction: C) Predict the major and minor product for the following Diels-Alder reaction:The following triene undergoes an intramolecular Diels-Alder reaction to give a bicyclic product. Propose a structural formula for the product. Account for the observation that the Diels-Alder reaction given in this problem takes place under milder conditions (at lower temperature) than the analogous Diels-Alder reaction shown in Problem 20.34.The following triene undergoes an intramolecular Diels-Alder reaction to give a bicyclic product. Propose a structural formula for the product. Account for the observation that the Diels-Alder reaction given in this problem takes place under milder conditions (at lower temperature) than the analogous Diels-Alder reaction 0"C Diels-Alder adduct
- A very large number of Diels-Alder reactions are recorded in the chemical literature, many of which involve relatively complicated dienes, dienophiles, or both. Predict the constitution of the Diels-Alder adduct that is expected to form from the combination of diene and dienophile below. Draw the structure of the predicted product, including relevant stereochemistry when applicable. If applicable, use the Bicyclic Stamp tool and guide points to draw each structure. Click and drag to start drawing a structure.A very large number of Diels-Alder reactions are recorded in the chemical literature, many of which involve relatively complicated dienes, dienophiles, or both. Predict the constitution of the Diels-Alder adduct that is expected to form from the combination of diene and dienophile below. Draw the structure of the predicted product, including relevant stereochemistry when applicable. If applicable, use the Bicyclic Stamp tool and guide points to draw each structure. NH + NC CN X NC CN Click and drag to start drawing a structure.G.292.
- 18. Predict the major product for the following Diels-Alder reaction. Include stereochemistry whenPlease give a clear and detailed image.3. The following reactions are not technically the Diels-Alder reaction, but you should still be able to predict the product (with appropriate regio/stereochemistry). (a) (b) OMe OMe H3C N + NC H3C. CN CH3
- The diene lactone shown in part (a) has one electron-donating group (¬OR) and one electron-withdrawing group(C“O). This diene lactone is sufficiently electron-rich to serve as the diene in a Diels–Alder reaction.(a) What product would you expect to form when this diene reacts with methyl acetylenecarboxylate, a strong dienophile?Draw and discuss the mechanism (with arrows to show electron movements) of the Diels-Alder reaction between anthracene and maleic anhydride. Draw the orientation and phases of the reacting p-orbitals showing how they overlap in a “suprafacial” geometry to form productThe following Diels-Alder reaction product is an intermediate in the synthesis of cholesterol. Provide the structure of the major product. Show stereochemistry when applicable. Hint: there are two possible dienophiles, which one is the better dienophile? Provide a brief explanation of your choice. CH,O.