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- Ethylene oxide is the starting material for the synthesis of 1,4-dioxane. Propose a mechanism for each step in this synthesis.II] Propose a mechanism for each of the following reactions : Br 1) CH;OH OCH3$ 2,6-Di-tert-butyl-4-methylphenol, alternatively known as butylated hydroxytoluene (BHT), is used as an antioxidant in foods to"retard spoilage" ( synthesized industrially from 4-methylphenol by reaction with 2-methylpropene in the presence of phosphoric acid. Propose a mechanism for this reaction. ВНT is OH OH H&PO, 4-Methylphenol 2-Methylpropene (p-Cresol) 2,6-Di-tert-butyl-4-methylphenol "Butylated hydroxytoluene" (BHT)
- When 1-chlorocyclohexene reacts with HBr, the major product is 1-bromo1-chlorocyclohexane. Propose a mechanism for this reaction, and explain whyyour proposed intermediate is more stable than the other possible intermediate8] Propose a mechanism to account for the following reaction H2SO4 +When benzene is treated with diazomethane and irradiated with light, cyclohepta-1,3,5-triene is produced. Propose a mechanism for this reaction. CH,N2 hv
- Choose the best reagents to complete the reaction shown below. OH 00 OH OH Q Q A B C D NaOH LiF H₂O NaHReaction of phenol with acetone in the presence of an acid catalyst gives a compound known as bisphenol A, which is used in the production of epoxy and polycarbonate resins Propose a mechanism for the formation of bisphenol A. OH H;PO, + H,O НО HO Phenol Acetone Bisphenol AProvide the product and mechanism for the reaction: ОН Cro, H,SO, H,0