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 a. b. C. d. LIAIH4 OH
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- 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 one4. 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. C. d. Indicate any regiochemical or stereochemical preferences. H₂C OCH₂ H+ HO,... CH₂OH2. Explain the reaction shown below. Include the following pieces in your explanation. Identify the electrophile and the nucleophile. a. b. Draw a curved arrow mechanism for this reaction. (Assume an acidic work-up). C. Explain the electron flow. d. Indicate any regiochemical or stereochemical preferences. OEt NaOEt OEt EtOH
- In Chapter 18, we will learn about the hydrolysis of acetals to aldehydes and ketones. Four of the seven steps in the mechanism for this process are shown in the conversion of acetal A to hemiacetal E. a.Add curved arrows for each step. b.Draw another resonance structure for C. c.Identify the nucleophile and electrophile in Step [3]. d.Which steps are Brønsted–Lowry acid–base reactions?Propose a mechanism for the following reaction. a. Explain why two products are formed. b. Explain why methanol substitutes for only one of the brominesDraw the major product of this reaction. Ignore inorganic byproducts. 1. CH3CCLi 2. Neutralizing work-up H
- 16. 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. Ph-0 a. b. c. d. Ph OH4. Circle the electrophilic and nucleophilic atoms in each substitution reaction below. Provide the neutral organic product; where a stereocenter is created, use a wavy bond to indicate a mixture of configurations or wedges/dashes for stereospecific reactions. Also, provide the dominant reaction mechanism (Sn2 or SN1) somewhere in each box. A. Br NaSEt DMF В. ELOH C. .SO2NHNA Cl + D. NaH Br- HO, DMF2. CI The intermediate in the following nucleophilic aromatic substitution reaction has at least 5 resonance structures. For this question, complete the following tasks: a. Show the mechanistic arrow(s) for the first step. b. Draw TWO of the many resonance structures of the intermediate, drawing out the -NO₂ groups in each. c. Draw the neutral product. NO₂ NO₂ HO and others neutral product
- Which of the following statement about using curved arrows in polar reaction mechanism is true? a. The nucleophile can be either negatively charged or positively charged. b. The electrophile can be either neutral or positively charged. c. Electrons move from an electrophilic sink to a nucleophilic source. d. None of the above. a b c dGl A. intermediate. alkyl halide is most likely to undergo the reaction mechanism which forms a carbocationDraw the major product of this reaction. Ignore inorganic byproducts and the alkoxide side product. H. 1. excess LIAIH. Select to Draw