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- Neopentyl alcohol, (CH3)3CCH2OH, reacts with concentrated HBr to give 2-bromo2-methylbutane, a rearranged product. Propose a mechanism for the formation of thisproduct.Provide the reagent(s) and the reaction mechanism of the following reaction H₂NNonconjugated , -unsaturated ketones, such as 3-cyclohexenone, are in an acid-catalyzed equilibrium with their conjugated , -unsaturated isomers. Propose a mechanism for this isomerization.
- Enamines normally react with methyl iodide to give two products: one arising from alkylation at nitrogen and the second arising from alkylation at carbon. For example, Heating the mixture of C-alkylation and N-alkylation products gives only the product from C-alkylation. Propose a mechanism for this isomerization.The reaction of methylpropene with HBr, under radical conditions, gives two intermediates. Propose a mechanism for the formation of the two products. Propose a mechanism for the following reaction and use electronic factors to account for the formation of a major product: CH2 CH2Br N-Bromosuccinimide (NBS) ho, CCI4 Draw the structure of an antioxidant, Vitamin E free radical and use resonance structures o account for its stability.When 2-methylpent-2-eno reacts with HCl two alkyl halides are formed. Present the structures of the formed products and propose a mechanism that explains the formation of these products. Indicate the main product.
- b) Listed below are several hypothetical nucleophilic substitution reactions. None is synthetically useful because the product indicated is not formed at an appreciable rate. In each case provide an explanation for the failure of the reaction to take place as indicated. OMe HO + OMe + OH HO + CH; OHThe treatment of (CH3)2C=CHCH2Br with H2O forms B (molecular formula C5H10O) as one of the products. Determine the structure of B from its 1H NMR and IR spectra.Please give the main substitution product for each of the following reactions, and indicate the dominant mechanism: (a) 1-bromopropane + NaOCH3 → (b) 3-bromo-3-methylpentane + NaOC2H5 →
- The treatment of (CH3)2C=CHCH2Br with H2O forms B (molecular formulaC5H10O) as one of the products. Determine the structure of B from its 1H NMR and IR spectra.Provide synthetic routes for the preparation of the starting materials of azo dye Alizarine Yellow R starting from benzene O₂N -NEN OH CO₂HWhen A is reacted with hot aqueous NaOH, a compound B of molecular formula C8H11NO is produced. With this information, write the correct structure of B and propose the reaction mechanism (step by step, with the correct use of arrows) to obtain B.
