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- Draw the major product of the reaction sequence. Omit byproducts. Select Draw Rings More C H 1. PHCO0OH 2. EtLi, then H3O* 3. PCCSelect an appropriate synthetic sequence to accomplish the transformation shown. 1. HBr/ROOR; 2. excess NaNH₂ O 1. Br₂, hv; 2. KOtBu; 3. ROOR 1. Br₂; 2. KotBu; 3. MCPBA 1. Br₂, hv; 2. KOtBu; 3. H₂O* O 1. HBr; 2. KOtBu; 3. MCPBA34. Select the best synthetic sequence to accomplish the transformation shown. Br A. 1. NaOEt; 2. HBr, cold, dark; 3. H₂SO4, H₂O B. 1. NaOEt; 2. HBr hv, A; 3. KO/Bu C. 1. NaOEt; 2. HBr cold, dark; 3. KOtBu D. 1. NaOEt; 2. Br₂; 3. KOBU E. 1. NaOEt; 2. Br₂, hv 35. In the retrosynthesis shown below: which compound could be converted to the alkyne shown in a single reaction step, with the appropriate reagents? Br -Bri Br Br || ||| IV B. C. D. E. None 36. In the retrosynthesis shown below: which compound(s) could lead to the alcohol shown in a single step, with the appropriate reagents? OH IV I B. 11 C. ||| D. E. A. I & II 37. Which alkene cannot be converted into an alkyne by reacting it with 1) bromine followed by 2) an excess of sodium amide and then 3) water? || IV B. C. E. All work D. Br
- Choose the reagent(s) that would be most likely to complete this reaction. I||| / A B C D 1. BH3-THF 2. H2O2, NaOH Br₂ H₂O OsO4 (catalytic) NMO RCO3H Done3,) you have now eliminated one substitution site and should have two possible sites remaining. Provide a mechanism for the formation of each of the two remaining products. You should include all possible. Resident structures for the cat on intermediates. There should be four resident structures in each mechanism. You do not need to show the mechanism for the formation of the electrify you may assume that only a single iodine will add to the ring. a. b. GOLDEST GAD SE 1029 OH H OH 02AB o 1o1 meiasdoorn woms bevis song of olds pel I+ noboibong tombong 10 to asiqisminoviowTill bris H₂O, EtOH naut nobibba as gada tasest 30 no odt to toubong Input sdr lo notaxillaryn I+ bouborg on to ving di salmsibb or O etshqoqs edt onimaob or atob MM O bax H seu zie.baz anoitecu dale19 H₂O, EtOH lliw gan snated a no quorg lanoituut invellib.noimadue shamore siliqotools al Hoib blaos tad aquosy Insoitonut oor za milline V.mobest ad not sila noistade sitt lenoiraut dues bleno) nobedog ad to goitool…Draw structores for the carbooyl electrophile nd enolate nocdeophile that react to give the enone below You do not have to consider stereochemistry. Draw the enolate ion in its carbanion form. Draw one structure per sketdher. Add additional sketchers using the drop-down menu in the bottom right Separate multiple reactants using the +sign from the drop-down menu. ChenCoodle submit Answer Retry Entre Crup a more group attempte remaining
- Which synthetic route(s) would complete the reaction shown? Br || ||| I and II O I and III ? HO OH + enantiomer Synthesis I: 1. NaCCCH3; 2. Na/NH3(I) ;3. OsO4; 4. NaHSO3, H₂O Synthesis II: 2. NaCCCH3; 2. H2, Lindlar's catalyst; 3. MCPBA; 4. aq. H₂SO4 Synthesis III: 1. NaCCCH3; 2. H₂, Pt; 3. MCPBA; 4. aq. H₂SO4e. f. Draw in any lone pairs of electrons that are directly involved in the reaction. or distributed d. Draw the elimination product that would form upon reaction of (4S)-1-bromo-4- methylhexane with KOC(CH3)3 in HOC(CH3)3 solvent. (Include Would this reaction be E1 or E2? de stereochemistry) may not be sha Draw a detailed step-wise mechanism for this elimination reaction. Be sure to include all steps, formal charges, and show the movement of electrons with curved arrows. Draw in any lone pairs of electrons that are directly involved in the reaction. msider the following reactions Indicate which mechanism(s) would be occurring (S1 S2 F1What is the expected product of the reaction sequence shown? Assume only the expected major product is taken on after step one and that standard workup is used, as appropriate. 1. PHCH2ONA Product 2. NaH, CH3I LOCH3 H3CS OCH3 PHCH2O PHCH20 HO PHCH20
- Complete the mechanism for the reaction of butanone with NaBH, followed by the addition of aqueous acid. 1. NABH4 final product 2. H3O* Step 2: Draw the charged organic intermediate product. Include nonbonding electrons and Step 1: draw curved arrows. Select Draw Rings More Erase charges. Omit the counterion. HB Na o C Select Draw Rings More Erase C H В :0 : H. H, O* H - B Na + ↑Select the major product from the reaction sequence shown. 1) MezNH, [TSOH], - H2O 2) 3) HO مال منه NMez .OH ? ka taresource from Cengage Learning - Google Chrome ssignment/takeCovalentActivity.do?locator=assignment-take e by the Aldol Condensation (References) OH base + H,0 heat H. H3C H. The aldol reaction is a carbonyl condensation reaction between two carbonyl partners and involves a combination of nucleophilic addition and a-substitution steps. One partner is converted into an enolate ion nucleophile and adds to the electrophilic carbonyl group of the second partner. In the classic aldol reaction, the carbonyl partners are aldehydes or ketones, although aldehydes are more reactive. The product is a B-hydroxy carbonyl compound. In the mixed aldol reaction, the best results are obtained when one of the partners does not have an a-hydrogen. It cannot form an enolate anion and can therefore not undergo self-reaction. The enolizable aldehyde is added slowly to a basic solution of the first aldehyde so that the mixed product is preferentially formed. Under reaction conditions slightly more vigorous…