Give two possible [1,2]-rearrangement products where an alkyl group migrates in the following compound. Motivate also which of the two products will be formed preferentially
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Give two possible [1,2]-rearrangement products where an alkyl group migrates in the following compound. Motivate also which of the two products will be formed preferentially
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- For the following compound: ته HO Draw a mechanism for the tautomerization process under BASIC conditions: Mechanism A: H-5: ·H Mechanism B: H-5: -H Mechanism C: H-0: H-O: Mechanism D: . © H-OH2 ل سے -H م - H-O: H-OO که فری -H H-00 H... H ·H H H m-o-m H: H H H H... H ته + H-OO H-00 O. H :: H © H-O-H -HThe following isomers react separately with sodium hydroxide to give different products with the formulas shown. HO. .CI Но NaOH NaOH C3H1,02 (a) Draw the structure of each product. (b) Draw the mechanism that accounts for the formation of each of those products. (c) Explain why the isomeric reactants lead to different products.How can you distinguish in a SNAr reactionwhether it will occur according to an additionelimination or an elimination-addition mechanism?
- For each of the following pairs of species, which is the stronger nucleophile in ethanol? Explain. (a) H3C-OH or H,C-o° (b) H3C-OH or H;C-NH, (c) or (d) (е) CH3S` CH3SE (f) CH;Se or or Br↑ ... Propose a reasonable stepwise mechanism, using curved arrow notation to show the flow of electrons, for the following reaction. KCN H EtOH, H₂O OH 02N O₂N NO2 Tt O ọ ♡ > ՐExplain how and why rearrangements occurduring Friedel-Crafts alkylation reactions formingmore than 1 product. Also illustrate therearrangement reaction from the aboveexample.
- Predict the product (s) with the appropri ate regio and stereochemical outcom e and provide a curved arrow mechanism for the reaction shown (hint: isopropanol reacts with intermediate) Cl, ? Isopropanol1.Draw the structures of all 3 resonance hybrid forms of the benzenonium intermediatefor both o and p attack for the case of activating groups an indicate which one in eachcase is the most stable form.Draw the structure of all 3 resonance hybrid forms of the benzenonium intermediatefor m attack in the case involving a deactivating group. 2.Halogens are deactivating groups but direct electrophilic attack at the o and ppositions. Why is this the case?Which of the following reactions willactually yield the indicated product?
- Identify compounds A,C,I in the following reaction sequences.The hydrobrominationof 2-methyl-1-butene could theoretically lead to 2 different alkyl bromides; in practice only one product is formed. Draw the structure of both theoretical products, circle the one that is actually produced, and briefly explain whyonly one product forms.Identify the electrophile and the nucleophile in each of the following reaction steps and then draw curved arrows to illustrate the bond-making and bondbreaking processes.