Which is the most polar compound in the aldol reaction: the ketone, the aldehyde, or the product? Explain. 8.1. oba H NaOH EtOH, A R R R R = F, H, CH 3, OCH 3 < >
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- 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. H₂SO4Select the appropriate method of converting 4-methyl-1-pentene into 3-methylbutanoic acid. O 1CC: 2. excess NaNH,; 3. Og;4. HO 0 1. Br2, CCl4; 2. excess NaNH2; 3. HO O 1 CB, CCI,;2. NaNH,; 3. H,O;4.O3:5.H,O 0 1.03;2. H,O; 3. CCl,; 4. excess NaNH25. HO O 1. Br2, CCli2, excess NaNH2; 3. H04.05.HO5. Write the mechanism of the following reaction. (R)-proline Et (cat.) "Et DMF, 0-RT Ét OH
- Question 1. Show the mechanism of the following reaction OH CH2=CH-ċ-CH3 + CH3OH •i Carry out the following organic synthesis. (Please provide reagents, condition, and intermediate compounds but mechanism is unnecessary) (20 pts) OH H3C H3C i. но HO. de ii. OCH3A.5. claisen reachion : aldol additim + SNac Predict the major product and draw the ran mechanism 25 °C babel the alasl donor and aldon accoptor. Clue : Byproduct is "Buo-H plka= 17Q5. Using the pK values of the conjugate acids of the leaving groups (pK perp (HBr) = - 9 . pK (H,O)-15.7. PK (HO) -1.7.), explain the difference in reactivity in substitution reactions between: a. CH,Brand CH,OH b. CHOH, and CH,OH Please answer correct.!!
- (b) Ph. Ph H Ph, Ph-P: Ph H ? Modify the given copy of the starting aldehyde to draw the major product. Be sure to include stereochemistry in your drawing.Be sure to answer all parts. What aldol product is formed when two molecules of butanal react together in the presence of base? draw structure ... What reagents are needed to convert this product to the following compound? HO. (+ Z isomer) [1] OH ; [2] NaBH4, CH3OH [1] MCPBA; [2] OH, H,0 [1] (CH),CuLi; [2] H,0 O ] CH,MgBr; [2] H,0* Your answer is incorrect. Which synthetic route(s) would complete the reaction shown? Br ? 1 SO II O III O I and II Oland III OH + enantiomer HO Synthesis I: 1. NaCCCH3; 2. Na/NH3(1):3. OsO4; 4. NaHSO₂, 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. H₂SO4
- 10. Draw the structure of the reactant(s) or major organic product(s) of each of the following reactions or write N.R for no reaction. There can be more than one answer per box. Show the correct stereochemistry when needed! J... Brz (2 equiv.) CH₂Cl₂ Nal, acetone (excess) AgNO3, EtOH (excess) Oot NC OH H3PO4 heat1). Fill in the missing intermediates and product in the following mult-step synthesis:Which of the following pairs will give two cross-aldol products? and H. (H3C)3C H. and H. H TH. CHO and TH. and H. H.