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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)?Predict the product(s) and provide the complete mechanism for each reaction below.но CH3CO₂Et LDA, -78 °C NaOEt EtOH in addition to the mechanism predict which product is favored
- V. @Given the following mechanism fer me Y OCHS NaOH reaction show the detailed conversion of A to B •OCN3 CH3OH. OH (A) (B) c Ⓒ using the same detailed mechanism instead of cyclonexare ring as shown in product. B, propose and fer a product wil a cyclopentane ning instead of a cyclohexane viny. Ⓒ Exploumpand I with why campand (B) is preferred over the campanay campand with a cyclopentake ring..Identify the suitable reagents for the given reaction and arrange them accordingly. 1 OH OEt 2 OEt OEt O 1) EtOH, H₂SO4; 2) EtOH, H₂SO4 O 1) EtONa followed by H₂O; 2) TsCl/py followed by EtONa O 1) EtONa followed by H₂O; 2) NaH followed by EtBr O 1) EtOH, H₂SO4; 2) NaH followed by EtBr O 1) EtOH, H₂SO4; 2) TsCy followed by EtONaIII. Give a detailed mechanism for the following reaction: OH ОН
- dedcue the major organic product from the following reations. be ablw to draw hydration halogenation hydrohalogenation, halohydrin formation, oxymercuratiom demercuration qnd hydroboration oxidation.The iodination of acetovanillone (1-(4-hydroxy-3-methoxyphenyl)ethan-1-one) occurs in the following reaction: C9H10O3 + NaI + NaOCl --> C9H10O3I + NaCl Draw the complete reaction mechanism of acetovanillone including curved arrows.For the following dehydrohalogenation (E2) reaction, draw the major organic product(s), including stereochemistry CI (Cн Сок СH, HII (Cн, СОн
- H3C-C O: H ethanal :CN: and the electrophile is cyanide ion In the step you have just written, the nucleophile is slow rate-determining Ö—0—1 H3C-C-C=N; adduct- EtO₂C Show Transcribed Text Please draw the mechanism step by step LIAIH4, Et₂O puis H3O+ NaBH4, EtOH puis H3O+ MeMgBr (excès) puis H3O+ ? ? ?V. @Given the following reaction show the detailed mechanism fer me 1 Conversion of A tu B •OCN3 OYOCH'S (A) Na och 3 CH3OH. almost the Ⓒ detailed using the identical. cyclonexare ving as a structure and .d. cyclopentane ning instead (B) OH а mechanism, instead of shoaln in product B, propase mechanism fer a product W/ a cyclohexane ving.