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- Do the reactions and he explains why.(a) How will you convert:(i) Benzene to acetophenone (ii) Propanone to 2-Methylpropan-2-ol(b) Give reasons :(i) Electrophilic substitution in benzoic acid takes place at meta position.(ii) Carboxylic acids are higher boiling liquids than aldehydes, ketones and alcohols of comparable molecular masses.(iii) Propanal is more reactive than propanone in nucleophilic addition reactions.The hydrocarbon fluorene was treated with potassium t-butoxide in an acid-base reaction, giving the fluorenide anion and t-butyl alcohol. (a) Which way does the equilibrium lie, and by how much? b) What is the proportion of the fluorenide anion to fluorene? (c) Why is fluorene so highly acidic, considering the pKa of an average alkane is above 50?
- 4. identify the structure of A and B in the following synthetic scheme: Write out complete reactions for each step, showing the structure of all reactants and products. (a) cyclohexanol +Na2Cr2O7/H2SO4, H2O -------> A (b) A + Et2NH/H2SO4 ----->B(c)Show step by step how to synthesize methoxybenzene from benzene.(a) Which of the following will NOT produce a carboxylic acid or carboxylate ion? 1-butanol + H2CrO4 2-butene + O3/H2O2 butanal + PCC butanal + H2CrO4 (b) Which of the following will NOT produce a carboxylic acid or carboxylate ion? 1-butanol + H2CrO4 2-butene + O3/H2O2 butanal + PCC butanal + H2CrO4
- How could you convert each of the following compounds into butanoic acid? Write each step showing all reagents. (a) 1-Butanol (b) 1-Bromobutane (c) 1-ButeneNeed help with D, not C.Give reasons for the following: (i) p-nitrophenol is more acidic than p-methylphenol. (ii) Bond length of C—O bond in phenol is shorter than that in methanol. (iii) (CH3)3C—Br on reaction with sodium methoxide (Na+ _OCH3) gives alkene as the main product and not an ether.
- 1. At what position and on what ring would you expect the following substances to undergo electrophilic substitution? (b) CH3 Br lel CH3 2. Rank the compounds in each group according to their reactivity toward electrophilic substitution. (a) Chlorobenzene, o-dichlorobenzene, benzene (b) p-Bromonitrobenzene, nitrobenzene, phenol (c) Fluorobenzene, benzaldehyde, 0-xylene (d) Benzonitrile, p-methylbenzonitrile, p-methoxybenzonitrilePredict the product of the following reactions. (a) 1. NaOEt, EtOH, heat 2. H3O+ quench (b) Pho O O OEt OMe 1. NaOMe, MeOH, heat 2. H3O+ quench4) Aromatic compounds are among the most abundant and versatile in nature. From a synthetic point of view, these compounds, despite their stabilities, are quite useful and can undergo reactions under special conditions and by specific mechanisms, such as the Electrophilic Aromatic Substitution (SAE) and the Nucleophilic Aromatic Substitution (SNAr). Based on this, please answer the following items: (b) How would you prepare the following compounds starting from benzene? Explain the second in a different way