5) Based on the structures of lycopene and ẞ-carotene, which are two chemicals found in another common vegetable, the tomato, answer the following questions: a) Are they stereoisomers, constitutional isomers or not even isomers? b) Do you expect them to be relatively polar or nonpolar substances? Why? c) How many double bonds are in lycopene? How many in ẞ-carotene? d) As lycopene is transformed into ẞ -carotene, how many pi electrons from the double bonds are transformed into single bonds? How many new single bonds are being formed in ẞ-carotene? e) The first step of a possible mechanism for the ring closure in the transformation is outlined below (only part of the structure is shown for simplicity). Draw the product that results from this arrow pushing mechanism. Be sure to include any formal charges that arise from the carbon atoms.

5) Based on the structures of lycopene and ẞ-carotene, which are two chemicals found in another common vegetable, the tomato, answer the following questions: a) Are they stereoisomers, constitutional isomers or not even isomers? b) Do you expect them to be relatively polar or nonpolar substances? Why? c) How many double bonds are in lycopene? How many in ẞ-carotene? d) As lycopene is transformed into ẞ -carotene, how many pi electrons from the double bonds are transformed into single bonds? How many new single bonds are being formed in ẞ-carotene? e) The first step of a possible mechanism for the ring closure in the transformation is outlined below (only part of the structure is shown for simplicity). Draw the product that results from this arrow pushing mechanism. Be sure to include any formal charges that arise from the carbon atoms.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter22: Organic And Biological Molecules

Section: Chapter Questions

Problem 6RQ: Distinguish between isomerism and resonance. Distinguish between structural and geometric isomerism....

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