The following scheme: -Br Br Br H Br The following scheme Br Br Br Br + -Br Br Br-Br Br Br For the anti-Markovnikov hydrobromination of the vinylcyclopentane shown below, which of the following is involved in the propagation step? 4 NOT O The following scheme: SMUL 997121 to of to of to H Br + -O-H + -Br The following scheme: The following scheme Br а Br Br H Br Br + -Br
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- Plastic photochromic sunglasses are based on the following reversible rearrangement of a dye inside the lenses that occurs when the lenses are exposed to sunlight. The original dye absorbs UV light but not visible light and is thus colorless, while the rearrangement product absorbs visible light and is thus darkened. (a) Show the mechanism of the rearrangement. (b) Why does the rearrangement product absorb at a longer wavelength (visible light) than the original dye (UV)?Benzvl chloride can be converted into benzaldehvde by treatment with nitromethane and base. The reaction involves initial conversion of nitromethane into its anion, followed by SN2 reaction of the anion with benzyl chloride and subsequent Ε2 reaction. Write the mechanism in detail, using curved arrows to indicate the electron flow in each step.owing reactions proceeds via an SN1 or SN2 of the reaction: (b) S2 pro85 39 Br tort atubong auonsV HMPAnoitutitadua
- What is the predicted product of the reaction shown? ОТ O II O ||| O IV OV Н Na2Cr2O7/H2SO4/H2O IV || ОН ОН овог H V Ш OH ОНNeed help on this questionRA Provide the missing major product, and the mechanism (SN1, SN2, E1, E2) for each case below. Show stereochemistry and regiochemistry where appropriate.d bios odi lsded 9onimslydiom Mechanism CH MH enimslyrtiem HO bios oionsqoig e.A = 6 2. 'Br (babon dinm on) muindiliups 16 benovsi sd bluow zbuborg NaOCH3 in refluxing methanol OTs ČH,CH3 nood ldsia tasol ori bns oldste om ordi loded
- Para çi (G) + Noa E H NOa Because of electr Substituton Para and ortho the favored pOsitio Stable VI. Draw the two possible intermediates for the attack of the nitronium ion on naphthalene including the important resonance structures. Which position is favored? Why? 28 Ahayden 12For the reaction below, draw he reachon mechanisms) (aurows) and predict al she major products. If no reachon will H2C acur brey explain whag: Br CH20HGive the major substitution product of the following reaction. Br O CH3CO₂H Save for Later heat OH OMe ? There is no reaction under these conditions or the correct product is not liste
- In the SN2 displacement by CH3CH20- or by CN- on 2-bromopropane, CN- reacts faster. In the SN2 displacement by HC3C- on bromomethane in benzene or in acetonitrile, reaction in acetonitrile goes fast ESTION 19 e following reactions are labeled according to the mechanism by which they proceed. Choose those that are correctl OH O E1CB + NaOH ONa DMF + CH3CH SN2 + CH;OH E1 Br + CH,CH ONa CH CH,OH SN1 JESTION 20 Which of these structures fit the following descriptions? Br An alkyl halide that gives a single alkene on E2 reaction H. An organohalide that will not undergo nucleophilic substitution Zaitod PH-CH.Please don't provide handwriting solutionDraw the intermediates A-C for reactions a and b. Please show the appropriate stereochemistry where necessary.