raw curved arrows to show the movement of electrons in the step of the mechanism shown below. Arrow-pushing Instructions AC XT *0: ·||₂ CH3-COEt + CH₂-COET :0: ||.. :8:* :0: || CH3-C-CH₂-C-OEt :OEt A tetrahedral carbonyl
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- OH OH ∞∞ BF3 Et₂O This reaction takes place via a pinacol rerrangement. Please, draw curved arrows to show the movement of electrons in this SPECIFIC step of the reaction mechanism. +BF3 HO: :OH OH (BF3OH)Answer the question below the reaction. O4S H3C H3C H3C OH In the first step of the reaction mechanism, which of the following is formed? CH3 H3C CH3 CH3 + Excess NH4Cl OH CH3 (+) -OH2 CH 3 CH3 OH CH3 H₂SO₁ CH3 CI ха +H2OFor the reaction shown below, circle the major product obtained when the | reaction is allowed to reach equilibrium. Place a box around the product that is formed the fastest. а H2C= CI H-CI CIH2C CIH,C H3C CI CI `CH3 H2C CIH,C H;C CI
- Br CH2 HBr CH3 Draw curved arrows to show the movement of electrons in this step of the reaction mechanism. Arrow-pushing Instructions CH2 Н— Br:H но. но HO Ethylene oxide is the starting material for the synthesis of 1,4-dioxepane. Draw curved arrows to show the movement ofelectrons in this step of the reaction mechanism. Arrow-pushing Instractions HO+ но H,ö: HO: :o: :o: I-Draw the simplest mechanism possible for the reaction below. You may need to re-draw structures to show bond lines or lone pairs. 0 Ö S он, H₂N-C- + H C-H H ОН Н H₂N-C-C-H H H + + H olo Ar
- Draw the mechanism for the reaction of an alkyl halide with sodium azide followed by reduction. Complete the mechanism of the initial step of the reaction, then identify the key intermediate and the product. Step 1: Draw curved arrows. o z + Na + || : z: I Step 2: Complete the intermediate. Na +-CH3 HBr -Br =CH₂ CH3 Draw curved arrows to show the movement of electrons in this step of the reaction mechanism. Arrow-pushing Instructions NA :Br: ► ×™ -CH3 -CH3 C-CH3 H6. Circle the product of the following reaction. 1. C=C-H 2. H2O НО Н H H3C . I H3C OH Н || Н сан Н Н.с о IV H Н
- The reaction below is a base-catalyzed aldol reaction. O || CH₂-C-H CH3-C-H Ethanal (Acetaldehyde) H I CH3-C-H Ethanal (Acetaldehyde) NaOH Draw curved arrows to show the movement of electrons in the step of the mechanism shown below. Arrow-pushing Instructions AC⇒x= :O: || :CH₂-C-H OH Bl CH3-CH—CH2-CH -CH₂-1-1 a 3-Hydroxybutanal (B-hydroxyaldehyde; formed as a racemic mixture) :0: :0: || CH3—CH—CH2-C-H A tetrahedral carbonyl addition intermediate X4. Use the reactant below to perform two separate reactions. Give the mechanism(s) and product(s) for each reaction. Show stereochemistry and be clear in your work. Use chair form. KOEt, EtOH t-Bu |||| H3O+3. 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?