3. (Sections 19.6 and 19.7) Draw the mechanism for the Wolff-Kishner reaction in a., being sure to show all relevant lone pairs, charges, arrows, etc. Draw the major product formed in reactions b. and c. For all reactions, pay attention to stereochemistry and regiochemistry!) H 1) H2N-NH2, acetic acid, H₂O/diethylene glycol 2) NaOH, 200 °C CH3 a. b. CEN H₂O H2SO4 CEN H₂O NaOH
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- Draw the structure(s) of the major organic product(s) of the following reaction. H,C. 1. NaOCH3 / CH3OH 2. 1 eq. 2-bromo-2-methylpropane • You do not have to consider stereochemistry. • Omit products derived from the acidic or basic reagent itself, e.g. HN(i-Pr)2 derived from N(i-Pr)2. • If no reaction occurs, draw the organic starting material. • If substantial starting material is present at the end of the reaction, include it in the products. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate structures with + signs from the drop-down menu.Consider reaction 1 and reaction 2 shown below. Reaction 1 Reaction 2 CH,CH AICI, CH₂COCI AlCl3, H₂O dimethylated benzenes and other products a) Both reaction 1 and reaction 2 proceed via a similar mechanism. Name the type of mechanism undergone b) Suggest why substituted benzene from reaction 1 gives a mixture of organic products while substituted benzene from reaction 2 gives only one mono-substituted product. c) The organic product in reaction 2, acetophenone, produce the corresponding cyanohydrin under certain experimental conditions. (i) State the reagents and conditions involved. (ii) Name the type of mechanism undergone. (iii) Predict and draw the product of corresponding cyanohydrin. d) State the importance of cyanohydrin.Question 10: Identify which reagents you would use to achieve the following transformations. a. b. C. CI OH OH OH 55... SH OTS CN Br
- 1. Consider the following reaction. CI EtOH OEt a. Provide a reasonable arrow-pushing mechanism for the following reaction, showing all steps and balancing all charges. b. Predict the stereochemistry of the final product(s). c. Label the electrophilic sites on the molecule and explain why only one of them undergoes substitution.B. Provide a reasonable mechanism for the non-enzymatic reaction below. ال NaOH/H₂O ÏWhich of the following compounds reacts faster in an elimination reaction with KOH? Also provide the major product(s) (if any) for each elimination reaction. Br Br )...
- 10. Explain the reaction shown below. Include the following pieces in your explanation. a. Identify the electrophile and the nucleophile. b. Draw a curved arrow mechanism for this reaction. (Assume an acidic work-up). Explain the electron flow. Indicate any regiochemical or stereochemical preferences. C. d. LIAIH4 OH6) Propose a reasonable mechanism for this reaction. m. G (C6Hs)3 (C6H5)3P-OBe sure to answer all parts. Synthesize the following compound from cyclohexanol, ethanol, and any other needed reagents. он Part 1 out of 2 Preparation of organometallic reagent: B CH3CH2OH CH3CH2MGB. draw structure... Draw the intermediate product above and select the correct reagent for A. NaBr O MgBr2 Br2 HBr Select the correct reagent for B. O Mgo O Mgl, O Mg O MgBr2 Next part
- Show a possible mechanism for the following reaction 1) EtMgBr (еxcess) 2) H20 Et OH Me •Me "Et w..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 [ ?2) Which of the following would be the worst option for completely reducing the carbonyl in the molecule shown? a. A Wolff Kishner Reduction b. A Clemmensen Reduction c. A Raney-Nickel Reduction d. All three reactions would work equally poorly e. None of the reactions would work poorly