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4.) For the following dienes A-G, please circle which organic molecules would not function a dienes in a Diels Alder reaction? H2C CH3 H3C H CH3 H3C CH2 H3C CH3 H B D A H H H2 CH2 H2 H CH3 H-CEC-C CH2 H2C H3C F G

4.) For the following dienes A-G, please circle which organic molecules would not function a dienes in a Diels Alder reaction? H2C CH3 H3C H CH3 H3C CH2 H3C CH3 H B D A H H H2 CH2 H2 H CH3 H-CEC-C CH2 H2C H3C F G

Chemistry
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Chapter1: Chemical Foundations
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**Question 4: Diels-Alder Reaction and Dienes Identification** For the following dienes A-G, please circle which organic molecules would **not** function as dienes in a Diels-Alder reaction: **Diagram/Structures Provided:** - **Molecule A:** Structure resembling 2,3-dimethyl-1,3-butadiene (a conjugated diene with two double bonds separated by a single bond) - **Molecule B:** Structure resembling 2,4-hexadiene (a conjugated diene with two double bonds separated by a single bond) - **Molecule C:** Structure resembling cyclopentadiene (a cyclic conjugated diene) - **Molecule D:** Structure resembling 1,3-cyclohexadiene (a cyclic conjugated diene) - **Molecule E:** Structure resembling 1,2-pentadiene (an allenic system with adjacent double bonds, not a conjugated diene) - **Molecule F:** Structure resembling 1,3-pentadiene (a conjugated diene with two double bonds separated by a single bond) - **Molecule G:** Structure resembling propene (an alkene with only one double bond, not a conjugated diene) **Key Concepts:** - **Diels-Alder Reaction:** A chemical reaction between a conjugated diene and a dienophile to form a cyclohexene system. - **Conjugated Diene:** A system with alternating double and single bonds, which is essential for the Diels-Alder reaction. **Instructions:** Examine the given molecules and identify which ones are not suitable to act as dienes in a Diels-Alder reaction based on their structural properties. **Answer Explanation:** - Molecule **E** (1,2-pentadiene) and Molecule **G** (propene) would not function as dienes in a Diels-Alder reaction. Molecule **E** is an allenic system with two adjacent double bonds and Molecule **G** has only one double bond, neither of which meets the criteria to participate in a Diels-Alder reaction as a diene.
Transcribed Image Text:**Question 4: Diels-Alder Reaction and Dienes Identification** For the following dienes A-G, please circle which organic molecules would **not** function as dienes in a Diels-Alder reaction: **Diagram/Structures Provided:** - **Molecule A:** Structure resembling 2,3-dimethyl-1,3-butadiene (a conjugated diene with two double bonds separated by a single bond) - **Molecule B:** Structure resembling 2,4-hexadiene (a conjugated diene with two double bonds separated by a single bond) - **Molecule C:** Structure resembling cyclopentadiene (a cyclic conjugated diene) - **Molecule D:** Structure resembling 1,3-cyclohexadiene (a cyclic conjugated diene) - **Molecule E:** Structure resembling 1,2-pentadiene (an allenic system with adjacent double bonds, not a conjugated diene) - **Molecule F:** Structure resembling 1,3-pentadiene (a conjugated diene with two double bonds separated by a single bond) - **Molecule G:** Structure resembling propene (an alkene with only one double bond, not a conjugated diene) **Key Concepts:** - **Diels-Alder Reaction:** A chemical reaction between a conjugated diene and a dienophile to form a cyclohexene system. - **Conjugated Diene:** A system with alternating double and single bonds, which is essential for the Diels-Alder reaction. **Instructions:** Examine the given molecules and identify which ones are not suitable to act as dienes in a Diels-Alder reaction based on their structural properties. **Answer Explanation:** - Molecule **E** (1,2-pentadiene) and Molecule **G** (propene) would not function as dienes in a Diels-Alder reaction. Molecule **E** is an allenic system with two adjacent double bonds and Molecule **G** has only one double bond, neither of which meets the criteria to participate in a Diels-Alder reaction as a diene.
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