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- 1. For the reaction in Fig. 9 draw the curved arrows and the structure of the transition state. H to Figure 9: Draw curved arrows and the structure of TS H₂O محمد OO-HWhich rearrangement would the two example of carbocation below most likely undergo? a. Methyl shiftb. Hydride shiftc. Paradigm shiftd. Equilibrium shift2. Draw the mechanism for the following Sw2 reaction. Draw the reaction coordinate diagram labeling starting materials, transition state(s), intermediates (if necessary), and products. H₂C Ath CH₂ H₂C (acetone) H₂C H₂C CH3
- Show the steps of the next reaction in detail. And explain why it's hard to go along with the dotted line.2. Но ... H-O Draw the major product of this reaction. Explain your reasoning. Br₂, H₂O EtOH 1. Me₂ BuSi-CI, imidazole 2.9-BBN-H (like BH3) 3. H₂O₂, NaOH OTMS excess HBr1.) Draw the least stable resonance form for the intermediate in the following electrophilic substitution reaction. N N Br₂/FeBr3 • You do not have to consider stereochemistry. • Include all valence lone pairs in your answer. • In cases where there is more than one answer, just draw one. [Review topics] 2.) Draw the most stable resonance form for the intermediate in the following electrophilic substitution reaction. [References OH OH Br₂ You do not have to consider stereochemistry. • Include all valence lone pairs in your answer. • In cases where there is more than one answer, just draw one. Br 'Br
- Melphalan, a drug used in chemotherapy, reacts with itself in the body before binding with its target, as illustrated in the mechanism below. What is the first pattern of arrow pushing seen in this reaction? (Look at the first arrow coming from the Nitrogen with a lone pair). a. rearrangementc. nucleophilic attackDraw the major organic product of the reaction shown below. HO. H2SO4 You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. • In cases where there is more than one answer, just draw one.3. Provide the complete mechanism for each of the following reaction. Н-Br
- 6. Determine whether each reaction occurs by an SN2, SN1, E1, and/or E2 reaction. Provide a detailed mechanism with curved arrows and the major product(s). CI NaSH DMF OMs NaOH H20, heat LDA Br DMF NaOH H20, heat OH HBr OH H*, H20 heat3. In the bromination of ethylbenzene (using Br2, FeBr3), the para path features the following intermediate arenium ion resonance structures. Which is most stable, and why? (Circle one and write.) Br Br Br H2. 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. يمهم NO₂ NO₂ HO and others neutral product