2. Consider the following reaction OH + PPO OH a. Draw the resonance structures of the intermediate that is formed after the benzene ring reacts with the allylic carbocation. b. Provide arrow-pushing mechanism for the formation of the product from the intermediate formed in part a.
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- Answer each question thoroughly nd completely. 1. Thoroughly explain why a halogen, X2 ,cannot be directly added to a benzene ring. 2. What properties does a benzene ring have that allude to its reactivity? 3. What is meant by aliphatic? 4. Explain the different types of oxidations for phenols. Give an example of each with the name of the phenol, and the oxidized phenol product. The examples should be drawn in chemical reaction form. 5. Are phenols reactive? Why or why not? 6. What is meant by an ortho director? Use a reaction as an example. 7. Why is the rate limiting step important in the bromination of benzene? 8. What role does the sigma complex play in electrophilic aromatic substitution reactions? 9. How do Lewis acids play a role in generation of the electrophile? A mechanism will be needed to go along with your explanation. 10. Explain the nitration of benzene reaction. 11. What are deactivating groups, and how do they relate to substitution on the benzene ring? 12. What is the…Wittig reactions with the following -chloroethers can be used for the synthesis of aldehydes and ketones. (a) Draw the structure of the triphenylphosphonium salt and Wittig reagent formed from each chloroether. (b) Draw the structural formula of the product formed by treating each Wittig reagent with cyclopentanone. Note that the functional group is an enol ether or, alternatively, a vinyl ether. (c) Draw the structural formula of the product formed on acid-catalyzed hydrolysis of each enol ether from part (b).Write a mechanism that accounts for the formation of ethyl isopropyl ether as one of the products in the following reaction. A. Write the mechanism for step one of this reaction. Show lone pairs and formal charges. Only the acidic hydrogen should be drawn out with a covalent bond. B. Write the mechanism for step two of this reaction (where the product of step one reacts with the solvent, ethanol). Show lone pairs and formal charges. Only the acidic hydrogen should be drawn out with a covalent bond. C.Write the mechanism for the last step of this reaction (formation of ethyl isopropyl ether). Show lone pairs and formal charges. Only the acidic hydrogen should be drawn out with a covalent bond. Cl- will act as the base in this reaction.
- Answer all three parts plz. You are starting with three aryl bromides. They undergo a typical grignard reaction with magnesium metal and anhydrous ether (diethyl ether). Dry ice is then added to it and it is then cooled. Draw and label the names of the aryl carboxylic acids that will form for each. Part a) bromobenzene Part b) para-bromoanisole Part c) meta-bromoanisolea) Draw the structure of alkene and proposed reagent(s) used to prepare the product in Reaction A. Draw the reaction mechanism for first image b) Predict the molecular structure of the major product(s) of Reaction B and C with second image c) Rank the following compounds from the lowest to highest boiling point. Explain your answer briefly. A: 1-Butanoic acid; B: 1- Butanol; C: 1-Butane d) Draw any three alcohol isomers with molecular formula of C4H10O. e) Based on isomer structures you drawn in part (d), draw the final oxidation product(s) (by KMnO4/H+) of any two isomer, respectively.Q2Show why the OH functional group, of phenol below, is ortho directing using curly arrows to show the formation of each of the four resonance structures A, B, C and D. Draw all the resonance structures A through D and explain why one resonance structure is more favourable than the other three in directing the electrophile (E*) ortho to the OH functional group.
- Evaluate the chemical reactions carefully. Predict the reagents required (marked with letters) in order to satisfy the given reactions. A.) Synthesis of 4-octanol A1. Write the general mechanism for a Nucleophilic Substitution Reaction.Step 2: Complete the resonance structure of the keto form, then add curved arrows. Step 3: Complete the resonance structure of the enolate form. Omit curved arrows.
- The addition of an alcohol to an acid chloride is an example of alcoholysis (alcohol addition with bond breakage). Consider the alcoholysis reaction below and answer the questions that follow. 1. Show the tetrahedral intermediate that is formed after the nucleophilic addition of the alcohol to the acid chloride. Be sure to include all lone pair electrons and formal charges on your intermediate structure. 2. Show the final product of this alcoholysis reaction that forms after the intermediate you made in Part 1. Do not include inorganic or charged products in your answer. Be sure to include all lone pair electrons and formal charges.NB: All bonds to benzene must be made using Electrophilic Aromatic Substitution (including Friedel-Crafts reactions) or Nucleophilic Aromatic Substitution! Design a synthesis of each of the following target molecules, starting with benzene: a. pentylbenzene b. 2-chloro-1-propyl benzene d. 3-chloro-1-propyl benzene d. 1-phenyl-1-butanolDraw the structure of the alkyl bromide and the nucleophile that will react in an Sy2 reaction to give the product shown. CN Alkyl bromide + Nucleophile H3C • You do not have to consider stereochemistry. Separate multiple reactants using the + sign from the drop-down menu.
