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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)?3) Show how you would synthesize the following Compounds, storting with benzene or toluene ond ASSume any necessory pro duct (ond seperoble from ortho) in ortho, pora reogents, poro is the mogor mixture c)o- chlorobenzoic ocid d) m- chloronitro benzeneab provide d remo gy nthesi's ANDA Forcward Synthesi s for the fouowing tano Foma ton from the provided startung matenon (some of whos e carbon atoms mustbe Integrated into the pro duct -i.eyou can't sust draw the produet as the Other reagens. Mather reagent and any. 'NO mechandsms required: Br Br
- please proudde the product and the mechanism For the Following reacton, otity your negitechemistny. HOKAgCOAO) Prupose everystep a reaction WmechaNsm fur Hhe above showns and intermedirte.Q, - write a Mechanism that explains hint he stereochemisty (sed pmacal rearangemendy a) CotH6 fonn Hcl b) HeoH O wr,te he Mechanism fer OH CHBrg NAOH (Carbene)
- 2. Which of the following would give a meta product when submitted to EAS reaction conditions? OA OB OC OD OE OF A B C H CF3 E F CI HOWhy do you suppose ketone halogenations in acidic media are referred to as being acid-catalyzed, whereas halogenations in basic media are base-promoted? In other words, why is a full equivalent of base required for halogenation?Predict the product(s) and provide the mechanism for each two-step process below.