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Q2 Propose mechanisms for the following reactions. (a) (b) (c) (d) (e) Br HBr ROOR hv cat. H₂SO4 H₂O HBr > HCI EtOH cat. H₂SO4 H₂O Br OH Br xBr+ Br CI CH₂CH3 OH H H -OH Br CH₂CH3
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- Propose a mechanism for the reaction of(a) 1-methylcyclohexanol with HBr to form 1-bromo-1-methylcyclohexane.(b) 2-cyclohexylethanol with HBr to form 1-bromo-2-cyclohexylethane.Neopentyl alcohol, (CH3)3CCH2OH, reacts with concentrated HBr to give 2-bromo2-methylbutane, a rearranged product. Propose a mechanism for the formation of thisproduct.Predict the structure of compounds A and B and provide a mechanism for the reaction. OH CI HOO A H3O*
- b) Refer to the following equation to answer Q3b (i), (ii) and (iii). CH3 H,SO, Н—с—он C-CH3 ? + H2O Но- ČH3 (i) Determine the product of the above reaction. (ii) Name the above reaction. (iii) Propose the mechanism for the above reaction.Propose mechanisms consistent with the following reactions. (a) (b) (c) (d) (f) (breif Written explantion for each PLEASE) Propose mechanisms consistent with the following reactions. (a) HBr ROOR Br H₂SO4 (b) H₂O OH Br HBr Br (d) (c) CHBr Br NaOH Br Br (e) HCI CH3CH₂OH Br OCH2CH3 Br ED-8 CH2CH3 H- OH H+, H₂O (f) H OH CH3CH2 CH2CH3 CH2CH3 (continued)Treatment of (CH3)2CHCH(OH)CH2CH3 with TsOH affords two products (M and N) with molecular formula C6H12. The 1H NMR spectra of M and N are given below. Propose structures for M and N, and draw a mechanism to explain their formation.
- Q12 Protonation converts the hydroxyl group of an alcohol to a good leaving group. Suggest a mechanism for each reaction. (a) (b) OH HBr (SN1 or SN2) H₂SO4 A Br + H₂OPropose mechanisms for the following reactions. (a) (b) (d) (f) 5. Propose mechanisms for the following reactions. CH,OH, H+, CH,O OCH3 PhNHNH₂, H+ N–NHPh (a) Ph-C-H Ph—C-H (b) CH3-C-H CH-C-H CH2 CH2-CH₂ Ph3P=CH2 (d) (c) H+ H₂O OH ОН (e) H₂O CHO H NH H (f) OCH3 CH3CH₂NH3 CI OCH3 CH3CH₂NH2 NCH,CH3Reaction 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 A
- Select the major product of the following reaction. H3O+ ? H20 OH HỌ, Yon OH OH (A) (B) (C) (D) O A O DPropose mechanisms for the following AlCl3@catalyzed reactions:(a) chlorocyclohexane with benzene(b) methyl chloride with anisole1) Provide the reagent(s) and the reaction mechanism of the following reaction. H₂N