Please devise Syntheses of the product Campaunds belou from ther respective Startng madenal Each of the synthesis will require mutiple steps E you Cant thok of a reagent for a partiCular reacticn Just write the pradučt and Continue from that Campaund 17 Br

Please 'Explain the mechanisms/steps taken in arder to2or he product

24. Which product is formed by the reaction ? A) | B) || C) ||| D) IV Br ОН NaH Br ... هستم IV

For the reaction below, draw a step-by-Step mechanism (ar rOus men drawa reaction Coordinate diagram as well as mě Struckare of she ransHlon state m for the reacon mechanism for the first Step in the mechanism consist ent with me Hammond Postulate : Но -Br CH gCH2OH + HBr

4

NBS RO-OR 1) BH3/THF 2) NaOH/ROOR HOBSMO enexerloloyalyitemint-S.tt Jserl H3O*(aq) O 8T-O

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)?

Can u explain ur answer thsnk u

Please show how to solve

! ( plz ans with proper explanation , aslo give mechanism