3. Show how Diels-Alder reactions might be used to synthesize the following compounds. a. H

3. What starting material would be necessary to prepare the following compound at on by the Diels-Alder reaction? RMA a

Match the chemical with its correct mass. maleic anhydride va-phellandrene theoretical yield of Diels-Alder reaction of a-phellandrene with maleic anhydride A. 0.817 g B.0.937 g C. 0.392

8. Predict the products of the following Diels-Alder reactions. Include the structures of enantiomers. a. b. NC CN

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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.

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The answer is c, please explain in detail thank you

I. II. III. V. IV. A. m-isopropylnitrobenzene B. o-isopropyinitrobenzene You are given the following compounds. 1. Pyridine 2. cyclobutadiene The aromatic compounds from the above list are: A. 1,2,3 B. 2,3,4 IUPAC name for mesitylene is: A. 1,2,3-trimethylbenzene 1,2,4-trimethylbenzene B. C. 1,3,5-trimethylbenzene D. 1,3,4-trimethylbenzene E. 1,4,5-trimethylbenzene Identify the antiaromatic compounds from the following list: 3. thiophene 1. cyclobutadiene 2. cyclopropenium anion 5. cyclopentadienyl cation A. 1,2,3 ABCDE C. p-isopropylnitrobenzene D. mixture of o-and p-isopropylbenzene E. The recovery of nitrobenzene A. B. C. 3. anthracene B. 3,4,5 C. 1,2,5 D. 3,4,5 E. 2,3,4 Nitrobenzene was reacted with n-propyl chloride in the presence of aluminum chloride as a catalyst. The product formed is: C. 1,2,3,4 iso-butylbenzene sec-butylbenzene tert-butylbenzene D. n-butylbenzene Benzene was reacted with isobutyl chloride in the presence of aluminum chloride as a catalyst. The product formed…

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