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

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Q: A. B. I Br2, CCl4 Br₂, H₂O Br2, CCl4 Br₂, H₂O

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Q: What diene and dienophile are needed to prepare each compound by a Diels–Alder reaction?

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Q: Diels-Alder reaction, c

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Q: 4. Propose a synthesis plan for these molecules (a) (b) Br. OEt from a Wittig reaction from benzene…

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Q: MCQ 16: In SN2 mechanism 'S' stands for A. subordinate B. substitution C. sub-reaction D. systemic…

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Q: 19. Supply the products and give the mechanism for the following retro Diels-A lder reaction.

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Q: Where will an electrophile attack? Prove by drawing resonance structures. O₂N. CH3 NO₂

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Q: Complete the Diels alder reaction. Show the mechanism with curved arrow s .CN

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Q: Show by series of reactions how n-bromobutane can be synthesized from: a. butane b. butyne

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Q: a. H CO₂CH3 CO₂CH3 H b. CO₂CH3 H H CO₂CH3

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Q: Gibberellic acid is a plant hormone that controls the development of plants. At various points in…

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Q: Q3. Predict the product of the following Diels-Alder reactions; under kinetic control. Include the…

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Q: Which one of the following compound is antiaromatic? H H III IV I II O A. II O B.I OC. More than one…

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Q: Question 20 For a diene to undergo a Diels-Alder reaction it must: O A. be able to adopt cyclohexane…

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Q: The diene shown below will NOT react in a Diels-Alder reaction. Why not? Select one: O A. The…

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Q: Predict the major product for the following reaction.

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Q: 9) Which compound is NOT aromatic A B D HA

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UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.