Select the major 1,2-product of the following reaction that is derived from most stable carbocation 1 equi. HCI ∞ ∞ ∞ II III ∞f do od IV CI V VI
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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 ОН3. 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?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 (are) the predicted major product(s) for the reaction shown? I II III IV O O O₂N O₂N. O₂N O₂N HNO3/H2SO4 || ||| II and III O IV and I NO₂ -605 NO₂What is the predicted product of the reaction shown? ооооо <<= = - IV H вое болбос ОН || V ОН ОН -CH₂OH IV 0= PCC, CH₂Cl2 ОН excess LOH н 0 ОНWhat is the predicted product of the reaction shown? ОТ O II O III OIV OV НО ОН || -ОН ||| Н H₂SO4 ОН IV
- 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 →What is the predicted product of the reaction shown? ОТ O II ||| O IV OV OH OH 1. 2. 3. Na2Cr2O7/H2SO4/H2O Оз DMS н || ОН он ОН Ш ее юля О НО IV V ОНChemistry Identify the structure of (E)-4,5-dimethylhept-3- ene. صلى سلم ماده معده صلر What is the expected major product of the following reaction? HBr ? || IV OV Br 11 ||| Br IV Br مام V
- Consider the cyclization reaction mechanism that is partially detailed below and predict the structures of key intermediates. Only draw resonance structures with carbanions and not oxyanions. G CH;00C [1] NaOCH3 [2] H2O COOCH3 Na* :OCH3 H H- CH;ö. :0: :0:13.a. Give the mechanism(s) and product(s) for the reaction below. Show stereochemistry. CH3 H3C CH3 ||||C KOtBu tBuOHWhat is the predicted major product for the reaction shown? Br H₂O e OI Oll ||| I and III II and IV OH hm.. OH₂ il Ⓒ H₂O IV