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- Classify the type of cycloaddition, [m+n], identify the type of bonding possible (supra-supra, antara-antara, or supra-antara), and predict whether the reaction will proceed thermally or photochemically for each of these reactions. a. b. N S S Ph NC. CN NC CN Ph-N=N=N Ph `N S CN NC N-N N CN CN PhDraw the two transition states between 1,3-butadiene and your dienophile. Would you expect these two transition states to be equal in energy or different in energy?Select the most reactive dienophile from the ones shown below.
- best condition for the reaction (1r,2s)-1 bromo-2methylcyclohexane->(s)3-methylcyclohex-1ene2) 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 CConsider the two alkene additions reactions a. What are the major products for each reaction? b. What is the mechanism for each reaction? c. Which reaction would be faster and why? Use words like “transition-state, intermediate and/or reactant/product stability” in your justification. Draw the reaction coordinate diagram for both to assist in your explanation.
- D. Provide a reasonable mechanism for the Diels-Alder reaction between two molecules of cyclopenta-1,3-diene. Br 1. Mg 2.CO₂ 3. H₂O* OHDraw structural formulas for the diene and dienophile that combine in a Diels-Alder reaction to form the product shown. Diene + Dienophile ? CH3 Consider E/Z stereochemistry of alkenes. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate multiple products using the + sign from the drop-down menu. Lits O. Sn [F CH3Rank the following dienes from most reactive to least reactive in a Diels Alder reaction. please explain steps
- Fill in the blank with either cumulated, conjugated, or isolated. a Compound a is a diene. Compound b is a diene. Compound c is a diene. The most stable compound is the diene.3 Please give one example for the classes of different dienes. Please explain why the conjugated diene is most stable.7. a) A) In the box below the arrow, label if the pericyclic reaction is a Diels Alder (DA), Electrocyclic (EC) or Sigmatropic Rearrangement (SR). B) Determine the major product(s). heat HO₂C b) heat to c) + 1. Na, NH3 NO2 NO2 2. heat