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- 2. Please rank the following dienophiles in their rate of reaction with the same diene in a Diels-Alder reaction (i.e. 1= fastest or most reactive dienophile, 4 = slowest or least reactive dienophile). Put your answer on the line below each structure. 3. Please rank the following dienes in their rate of reaction with the same dienophile in a Diels-Alder reaction (i.e. 1= fastest or most reactive diene, 4 = slowest or least reactive diene). Put your answer on the line below each structure. OMe OMe OMe |Draw the diene and dienophile that are needed to prepare the following Diels-Alder product. Diene: draw structure. Dienophile: draw structure ..Draw the reactants that would be used to form this cyclohexene derivative in a Diels-Alder reaction. Include any relevant stereochemical configurations. My diene is right but not my dienophile. Please help.
- 3. Please rank the following dienes in their rate of reaction with the same dienophile in a Diels-Alder reaction (i.e. 1 = fastest or most reactive diene, 4 = slowest or least reactive diene). Put your answer on the line below each structure. %3D OMe OMe OMeOne of the following Diels-Alder reactions will occur more rapidly than the other. Draw the major, organic product for only the faster of these two reactions. You do not need to account for stereochemistry, but be sure your answer accounts for regiochemistry, where appropriate. CH3 H,C HN H,C ČH, N. H CH3 H2C ČH,a) Devise a retrosynthetic analysis for the synthesis of the molecule shown below. Be sure to draw all starting materials and conditions. CH CH3 b.) Draw the major product for the following reaction. heat c.) Please draw the anticipated product from this Diels-Alder reaction. Hint: anthracene's middle phenyl ring contains a reactive diene. CO,Me MeO2C heat
- a.) Devise a retrosynthetic analysis for the synthesis of the molecule shown below. Be sure to draw all starting materials and conditions. CH3 b.) Draw the major product for the following reaction. heat c.) Please draw the anticipated product from this Diels-Alder reaction. Hint: anthracene's middle phenyl ring contains a reactive diene. CO2M. MeO2C heat2. Draw the structures and explain why CH3CH₂O and CH3CO₂ are good nucleophiles but CH3SO3, water, and alcohols (R-OH) are poor nucleophiles. Propose a 'cutoff' for the amount of negative charge needed to be a good nucleophile. CH3CH₂O CH3CO₂ CH3SO3 H₂O CH₂OH2. Draw the structure of the diene and dienophile that will lead to the following adduct. CH3 O CH3
- 3.Help on Retro Synthesis from Diene to eudesmol by using Diels-alder. OTMS 3. YOH HO. H. a-eudesmol17. a. Label the reactive features, highlight the most reactive one, then highlight what it needs. Also, state if the reaction will start to create a carbocation, carbon radical, or carbanion, or will cause loss of aromatic character. If a carbocation, carbon radical, or carbanion starts to develop, label where that will occur. -CH3 with H,SO, b. Use mechanism arrows to illustrate the reaction that occurs. c. If applicable, use stabilization resources to deal with the carbocation, carbon radical, or carbanion that starts to develop during the reaction, and draw the structure of any resonance-stabilized intermediate. d. Continue labeling and diagramming the reaction until you find the major stable product(s). e. Finally, state the stereochemistry of the major product(s) and use either Fisher projection or perspective formula representations to illustrate that stereochemistry.3. Using the carbon sources provided and any other necessary reagents needed, propose a viable synthesis for the product shown. Your synthesis must include a Diels-Alder reaction. For each step in your synthesis be sure to show the reagents/conditions necessary for that step and also draw the major product expected for each step leading to the product. You will also need to use reactions discussed in previous chapters as well. Carbon Sources Available H₂C=CH2 steps CH₂Br