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- What is the predicted product of the reaction shown? ОТ O II O ||| O IV OV Н Na2Cr2O7/H2SO4/H2O IV || ОН ОН овог H V Ш OH ОН1 D D eq M eq [References] Draw a structural formula for the major organic product of the reaction shown below. &. (02)00 CH₂ CuLi CH3CH₂0 2 ether • You do not have to consider stereochemistry. + ? H30+Q6. Fill in the blanks left in each of the following syntheses: Example: OH H Find the flaw(s): ОН H₂O* H CH3OH. Hº H ОН ОН H CO OCH3 0 MgBr NHANH2 КОН ОН оньсо H₂CO OCH; H
- What is the expected major product of the reaction sequence shown below? H CH3 CH3 be be || IV 1. 03 2. Zn/H₂O H ? H V OH CH33. Show the mechanism for the acid catalyzed addition of H2O to the following ketone. OH H20 CH3 H* 4. The scheme below shows the reaction of a ketone, 2-propanone with methanol. OH :0 : || CH,-C-CH3 : ОН + H CH, c-CH3 CH;-C-CH3 N step 1 step 2 step 3 P CH,OH CH3 CH,OH step 4 + H OCH3 CH,-C-CH3 H - H,0 C-CH3 ÓCH, S CH; step 7 step 6 step 5 OCH3 i) Write the missing structures (N, O, Q and R) in the above reaction scheme. ii) Name the class of compounds P and S belong to? iii) This is an acid catalyzed reaction. What does this statement mean? iv) Draw the arrow diagram in step 6 to show how intermediate R is formed? Write the equation for this step ONLY. v) Steps 3 and 7 involve loss of a proton from the intermediate ions. Why is this step necessary?122. For the following three step conversion of A to B, the appropriate sequence of reactions is A OH CAREER ENDEAVOUR B CHO (a) MnO₂; (CH₂OH),/p-TSA; PCC (b) PCC; MnO₂; (CH₂OH)₂/p-TSA; (c) PCC; (CH₂OH)₂/p-TSA; Jones' reagent (d) Jones' reagent; (CH₂OH)₂/p-TSA; MnO₂.
- Mechanism: A reaction mechanism for the following reaction is shown below. H+ CEN CEN: N-H || -C-OH H₂O, H* Step 1 wand woled mot ozsm E Step 3 N-H C-OH C=N-H Step2 C=N-H H-O-H H₂O motno vgiene fesrigid onlt to smotnos -C=N-H a) The overall reaction is an example of b) Step 1 is c) Step 3 is d) Draw in the curved arrows for each step. e) Identify the nucleophiles and electrophiles where appropriate. f) Fill in the reaction energy diagram. H₂O: rate determining step to noipojovo hamwell sit 5(emise erit voittons 10) vanas mi sdgin al rainW di of E^ reaction progress →V. @Given the following mechanism fer me Y OCHS NaOH reaction show the detailed conversion of A to B •OCN3 CH3OH. OH (A) (B) c Ⓒ using the same detailed mechanism instead of cyclonexare ring as shown in product. B, propose and fer a product wil a cyclopentane ning instead of a cyclohexane viny. Ⓒ Exploumpand I with why campand (B) is preferred over the campanay campand with a cyclopentake ring..Which of the following is the best method to carry out the following transformation? OH (a) H₂SO4, H₂O (b) 1. BH3 2. H₂O2, OH (c) 1. Hg(OAc)₂2 H₂O 2. NaBH. (d) 1. HBr 2. H₂O
- III. Give a detailed mechanism for the following reaction: OH ОНbiackboard.gwu.edu/webapPps/assessment/feview/review.jsprattempld Select the major product of the reaction below. 1) TIPSCI, Et3N 2) Na 3) 03, then CH3SCH3 4) CH3CH2LI, then H30* 5) Bu4N* F', H2O CI Selected Answer: Он HO Answers: он он он OH OH OH он Select the major product of the reaction below. The answer is there, but please explain step by step.Organic Chemistry - Mechanism Show the mechanism of transformations below:Show the mechanism of transformations below: b) OMe 1. NaOMe MeOH Meo, Meo OMe 2. H30* TSOH, A B C) CI Meo OMe MeO OMe NaOMe MeO OMe NaOMe (excesso) (excesso)