12.Use of KMnO4 to effect oxidative cleave of the alkene J, C¿H16, yields two fragments, one of which is butanoic acid and the other a ketone, Q. When J reacts with one molar equivalent of H-Cl, the alkyl halide K, C3H1,Cl, is formed. What are the structures of J, J, and Q? Write all the reactions, and show your reasoning.
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- DHA is a fatty acid derived from sh oil and an abundant fatty acid in vertebrate brains. Hydrogenation of DHA forms docosanoic acid [CH3(CH2)20CO2H] and ozonolysis forms CH3CH2CHO, CH2(CHO)2 (ve equivalents), and HCOCH2CH2CO2H. What is the structure of DHA if all double bonds have the Z conguration?The rate law for addition of Br2 to an alkene is first orderin Br2 and first order in the alkene. Does this informationsuggest that the mechanism of addition of Br2 to analkene proceeds in the same manner as for addition of HBr?Explain.New hydrocarbon compounds K, L, M and N have been formed from an organic reactions in Dr. Meredith laboratory. She found that compound K and L with molecular formula (C;H14) are unsaturated hydrocarbons with positional isomerism. Meanwhile, the reaction of hydrocarbon from compound M produces carbon dioxide and water when burns in plentiful oxygen. Another observation showed compound N produces three products X, Y and Z when react with chlorine gas in the presence of UV light. Identify the name of unsaturated hydrocarbon compound K and L and draw their possible condensed and skeletal structures. Suggest the IUPAC nomenclature name for compound M and write the complete chemical reaction of compound M when burns in plentiful oxygen. Show the complete mechanism reaction that occur for the formation of products X, Y and Z from compound N.
- (b) Describe the hazards of (i) trioxygen: (ii) hydroxide ion; (ii) hydrogen sulfide. (c) Explain why an aqueous solution of sodium sulfide has an odor of hydrogen sulfide. (d) (11) Reduction of H,CCHCHO with NABH4 gives a product different from that of catalytic hydrogenation (H2 /Ni). What are the products?Iees] Use the References to access important values if needed for this question. Draw the organic product that is expected to form when the following compound is oxidized under biological conditions. oxidation CH3CH2SH reduction • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. • If no reaction occurs, draw the organic starting material. cP opy aste Previc ChemDoodle1. For the reaction (CH3)2O + C₂H5F → [(CH3)2OC₂H5]+F¯ (a) draw the structure for the cation
- An unknown hydrocarbon Q has a formula C6H12. Q reacts with osmium tetroxide to give a diol R when oxidized with KMnQ4 in an acidic medium Q gives two products. One product is propanoic acid and the other is ketone S. Provide reaction equations to identify the possible structures of Q, R and S."A research team synthesizes a novel organic compound 'X' with the molecular formula C5H8O2. When 'X' is treated with a deuterated acid (D2O), a single deuterium atom replaces a hydrogen atom, forming compound 'Y' (C5H7DO2). 'X' does not react with 2,4-Dinitrophenylhydrazine (2,4-DNP) but does react with both Tollens' reagent and Benedict's solution, forming a silver mirror and a red precipitate, respectively. Furthermore, 'X' undergoes catalytic hydrogenation over a palladium catalyst, consuming one mole of hydrogen to form a compound 'Z' (C5H10O2). Based on these observations, what is the most likely structure of compound 'X'?" A. Methyl vinyl ketone B. 3-Buten-2-one C. Acetoacetic ester D. 2-Hydroxypent-3-enalIn the following structure I have abbreviated the long carbon chain as an R group. Provide the two major products of the following reaction (Hint: Must consider stereochemistry!). HO H R H Br₂ What is the isomeric relationship of the two products?
- 4. Outline the following synthesis (a). Butane to 2-butanol (b). 1,2-dibromopropane from 2-propanol (c). 1-butanol to 2-butanol (d). Propane to Propene4. Resonance. For each of the following structural formulas, provide the indicated number of resonance structures. Use curved arrows to show the electron movement between each structure, use double headed arrow to separate the structures, and enclose all of them in a single set of brackets []. a) N204 (O₂N-NO2) (4 structures)(a) Answer the following questions based on the reaction scheme below. Jawab soalan berikut berdasarkan rajah tindak balas di bawah. H,SO, 180°C R OH+ Δ U NH, (i) State reagent Q. Nyatakan reagen Q. (ii) Draw the structural formula for compounds R, T, U and W. Lukiskan formula struktur bagi sebatian R, T, U dan W. PCI,