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- 1.Describe the ozonolysis of alkenes 2.one mole of a hydrocarbon(A) reacts with one mole of beomine giving a dibromo compound C5H10Br2.Substance A on treatment with cold dilute kMnO4 solution forms a compound C5C12O2(C5H12O2) on ozonolysis A,gives equimolar quantities of propanone and ethanol.Deduce the structure of substance A.A. In the synthesis of 1-bromobutane, what is the inorganic by-product left in the reaction flask following the distillation? Why was the bromoalkane the bottom layer in the separatory funnel? B. Predict the product when 1-methylcyclohexanol reacts with H2SO4 and KBr. Show the mechanism.3. Benzalacetophenone can be nitrated to give the mononitro derivative.(a) Provide the structure of the mononitro derivative.(b) If a second nitro group is introduced, where would it enter? Give the structure of theproduct.
- Explain how benzaldehyde and dimedone reacts with each other, and then with the aminotriazole to form compound 1a in the presence of an acid catalyst. Provide a detailed reaction mechanism. During the development of the optimized procedure for the experiment, it was found out that compound 1b can also be produced from the same set of starting materials. Propose a detailed reaction mechanism for the formation of 1b. Explain your answer. What factor/s may drive the formation of 1b over 1a?Propose a feasible synthesis for 2-iodo-4-methylphenolfrom2-amino-4-methylphenol. Draw the reaction scheme and briefly describe the reaction.(a) Explain the mechanism of a nucleophilic attack on the carbonyl group of an aldehyde or a ketone.(b) An organic compound (A) (molecular formula CgH16Q2) was hydrolysed with dilute sulphuric acid to give a carboxylic acid (B) and an alcohol (C). Oxidation of (C) with chromic acid also produced (B). On dehydration (C) gives but-1-ene. Write the equations for the reactions involved.
- Doxaprost, an orally active bronchodilator patterned after the natural prostaglandins , is synthesized in the following series of reactions starting with ethyl 2-oxocyclopentanecarboxylate. Except for the Nef reaction in Step 8, we have seen examples of all other types of reactions involved in this synthesis. Q. Write equations to show that Step 6 can be brought about using either methanol or diazomethane (CH2N2) as a source of the -CH3 in the methyl ester.a) Give the appropriate base for the above reaction and draw the resonance structures of the enolate ions derived from compound A. Then write the mechanism for the formation of the Dieckmann cyclized product B. b) If compound B above is reacted with NaBH 4 , draw the structure of the reduced product. Give a reason for your choice of product. c) Being a β-ketoester, B could undergo a 3-step synthesis involving alkylation, hydrolysis and decarboxylation reactions to yield the cyclopentanone, C. Write the outline synthesis for each step which include the appropriate regents and correct intermediate.Propose a mechanism for the reaction of aniline with ethyl acetate to give acetanilide.What is the leaving group in your proposed mechanism? Would this be a suitableleaving group for an SN2 reaction?
- Sketch and explain the IR, UV, mass, and NMR (1H and 13C) spectroscopy data of BenzonitrileSuggest reagents to make the drug phenaglycodol by the route below.Treatment of salicylaldehyde (2-hydroxybenzaldehyde) with bromine in glacial acetic acid at 0°C gives a compound with the molecular formula C7H4Br2O2, which is used as a topical fungicide and antibacterial agent. Propose a structural formula for this compound