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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)?! ( plz give reaction and its mechanism)Draw the major product of the reaction shown. OI O III O IV OV eTextbook and Media OMe = CI = ||| oto IV V ||
- ew fopics] Draw the major organic product of the reaction shown below. H2SO4 HO, • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. • In cases where there is more than one answer, just draw one. C opy aste [F ChemDoodleDetermine the mechanism of nucleophilic substitution of each reaction and draw the products, including stereochemistr CH₂CH3 CI Br + CN d. + CH3COOH a. acetone + -OCH3 e. DMF f. b. C. ||||| a ||||| Br H Br CH2CH2CH3 + CH3OH DMSO H CH3 CI Br + OCH₂CH3 + CH3CH₂OH4) Give the correct product with the correct stereochemistry. Me Me 5) Give the major product. hv HCI OC
- Propse a mechanism for the following reaction:Draw full mechanism for below reaction? explain the stereochemistry. н HA H HSPr SPr H2, Pd/C H SPrWhat will be the major product of the following reaction and what is the likely mechanism for its formation? (CH;);COK Br racemic OCCCH3)3 OCCH3)3 ÓCCCH3)3 A B C D E