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- Acyl transfer (nucleophilic substitution at carbonyl) reactions proceed in two stages via a "tetrahedral intermediate." Draw the tetrahedral intermediate as it is first formed in the following reaction. H3C HCI / H2O `NH2 reflux • You do not have to consider stereochemistry. • Include all valence lone pairs in your answer. • Do not include counter-ions, e.g., Na", I, in your answer. • In cases where there is more than one answer, just draw one. opy aste Previous NextFor each reaction below, look at the reagents and conditions (above and below the arrow) and determine the final product. Indicate if the reaction proceeds via either: SN1 mechanism, SN2 mechanism, other mechanism, or the reaction cannot take place (NO REACTION). :0 : 0 CH3OH A: B: C: D: ? NO REACTION H. Ï : OH (Protonation mechanism) (SN2 mechanism) (SN2 mechanism)Acyl transfer (nucleophilic substitution at carbonyl) reactions proceed in two stages via a "tetrahedral intermediate." Draw the tetrahedral intermediate as it is first formed in the following reaction. H3C. ... NH2 HCI/H₂O reflux • You do not have to consider stereochemistry. • Include all valence lone pairs in your answer. • Do not include counter-ions, e.g., Na+, I, in your answer. • In cases where there is more than one answer, just draw one. + 4 n [ ?
- Question 5. (20 points) Consider the following reaction. + PhLi (2 eq.) then water a) Propose a structure for the final product. b) Give a complete mechanism for the transformation. c) Draw an energy diagram of the transformation and briefly comment on the relative energies of the starting material, final product, and any intermediate(s), and about the rate determining step.10. Explain the reaction shown below. Include the following pieces in your explanation. Identify the electrophile and the nucleophile. Draw a curved arrow mechanism for this reaction. (Assume an acidic work-up). Explain the electron flow. Indicate any regiochemical or stereochemical preferences. one b. c. d. LIAIH4 OH oneH3C-C O: H ethanal :CN: and the electrophile is cyanide ion In the step you have just written, the nucleophile is slow rate-determining Ö—0—1 H3C-C-C=N; adduct
- QUESTION 18 Consider the ether cleavage reaction shown below. What mechanism occurs and what are the major organic products of the reaction? 1 eq. HCI ponding letter designation O A. Mechanism: S2, Products: B.. Mechanism: SN1, Products: OC. Mechanism: SN1, Products: CI HO D.. Mechanism: SN2, Products: HOMaxwell presented by Macmillan Le Complete the mechanism for the DIBAL-H (diisobutylaluminum hydride) reduction of methyl cyclopentanecarboxylate at -78 °C in hexane solvent by adding any missing atoms, bonds, charges, nonbonding electron pairs, and curved arrows. Step 1: Draw a curved arrow. Step 2: Complete the intermediate, then draw curved arroWS. Select Draw Rings More Erase Select Draw Rings More Erase C H H AL AL المند :0: Cognition (4) docx Cognition (3).docxIdentify the electrophile and the nucleophile in each of the following reaction steps and then draw curved arrows to illustrate the bond-making and bondbreaking processes.
- Synthesis - Drawing Saved Synthesize the following compound from cyclohexanol, ethanol, and any other needed reagents. он Part 1 out of 2 plnts Preparation of organometallic reagent: еВook Print References A B CH3CH2OH CH3 CH2MGB. draw structure ... Draw the intermediate product above and select the correct reagent for A. O Br, O NaBr O HBr O Select the correct reagent for B. O Mg O MgBr2 O MgI, O MgO Hin Soluti raw 11 e here to searchSynthesize Chloramphenicol from Toluene or Benzaldehyde. Draw and explain step by step please.(p.s: if you can, can you write what the reagents does?) (Drug Chemistry)149) Why is a tertiary alcohol more reactive with hydrogen halides, than secondary alcohols? Because secondary alcohols are smaller and therefore less reactive for the attack of halide nucleophile. Because tertiary alcohols have more hydrogen atoms available for substitution reactions. Because a tertiary alcohol can form a more stable carbocation as an intermediate in the reaction. Only the 1st and the 2nd statements are acceptable.