Fill in the blanks: The reaction involved is called occurs Use arrow formalisms to show the reaction mechanism of conversion. Submit your solution CC AICI CI that 25
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- Explain how and why rearrangements occurduring Friedel-Crafts alkylation reactions formingmore than 1 product. Also illustrate therearrangement reaction from the aboveexample.For each reaction, decide whether substitution or elimination (or both) is possible, andpredict the products you expect. Label the major products. chlorocyclohexane + NaOC(CH3)3 in (CH3)3COHI. Molecular rearrangementsA) How are 1,2-hydride shifts in carbocation intermediates formed during SN1 or E1-type processes? How are carbocations formed by treating alcohols with water? How can you predict when a hydride shift will occur and how can you show it using arrow-pushing strategies?
- Benzene is one of the compounds used as octane enhancers in unleaded gasoline. It is manufactured by thecatalytic conversion of acetylene to benzene: 3C2 H2(g) ⇌ C6 H6(g). Which value of Kc would make this reactionmost useful commercially? Kc ≈ 0.01, Kc ≈ 1, or Kc ≈ 10. Explain your answerb. In a strongly basic solution, the starting material again converts into a molecule with the molecular formula C6H12OC6H12O. but with a completely different structure.Rearrangements can occur during the dehydration of 1° alcohols eventhough no 1° carbocation is formed—that is, a 1,2-shift occurs as the C—OH2+ bond is broken, forming a more stable 2° or 3° carbocation, asshown in Equation [1]. Using this information, draw a stepwisemechanism for the reaction shown in Equation [2]. We will see anotherexample of this type of rearrangement
- Carbocations often rearrange, as shown below. Draw in the hydrogens on the two carbons involved in the rearrangement, and show formal arrow-pushing to illustrate the transformation.Show the curved-arrow mechanism for the first step, and the structure of the cyclic intermediate formed, when cyclopentene in treated with KMnO4 . A Lewis structure for the permanganate ion is provided in the hint. Make sure to show all non‑bonding electron pairs and formal charges where necessary. Omit K+ .Predict the product, draw the mechanism, and plot the reaction coordinate diagram for theE1 reaction.
- Rank the species below in order of increasing nucleophilicity in protic solvent. I. H2O II. CH3S— III. CH3COO— IV. t-BuO— I, II, IV, III I, III, II, IV I, III, IV, II I, II, III, IVConformation control of reaction mechansims. Consider the reaction below: Provide all possible elimination products from this reaction and identify the major elimination product. Provide mechanisms (with curved arrows) that clearly explain the reaction outcome.Proposeamechanismfortheconversionofcis-hex-3-enetotheepoxide(3,4-epoxyhexane) and the ring-opening reaction to give the glycol, hexane-3,4-diol. In your mechanism, pay particular attention to the stereochemistry of the intermediates and products.