3) A chemist tried the following reaction, but did not make the compound she expected. What did she make? Show a proper (correct ‘electron pushing”, logical intermediates, etc.) mechanism that explains the formation of the unexpected product. HO Br2 (CH2Cl2)
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- What are the necessary reagents for the below transformations to occur? Provide a mechanism for b) (the amount of arrows do not indicate the specific number of steps required) a) b) OH 111 CO,CH, CO₂CH3 om H M SO OH5. Which product is formed in the following reaction? OH KCrO, 77 OH (e) (b) (c)3) Fill in the red box(es) with the missing reactant(s), reagent(s), product(s), solvent, and/or conditions and write a reasonable mechanism for the reaction. Not every box needs to be used and not every box necessarily corresponds to only a single species. If no reaction occurs OR no reagents exist to perform the reaction state, "NOT POSSIBLE" AND explain why. os 1) NaOH 2) H₂O*
- Draw an arrow-pushing mechanism and identify the product(s) for each reaction below and specify the most likely mechanism by which the product(s) is formed (SN1, SN2, El, E2, or a combination of these.) Br NACN DMF Br NaOCH3 CH;OH (ii) HCI OHGive the product of the following reaction. NO, HI NO, NO, он NO There is no reaction under these conditions or the correct product is not listed. NO2 NO,14. When propylene reacts with hydrogen bromide in the presence of a peroxide initiator, which of the following structures are formed during the mechanism? (A) Br Br (B) (C) Br H• (D)
- (b) Write out the product(s) for the reactions below. Analyze the compounds (i) and (ii) below and classify which one reacts faster. Explain your answer. (ii) H OH SO3 H₂SO4 HNO3 H₂SO4An organic chemist reacts (S)-2-butanol with PBr3 in pyridine, removes the major organic product, and then reacts that product with a methoxide ion (-OCH3). What final major organic product does the chemist make? ΟΑ OB OC OD OE OCH₂ O Both C and D B OCH₂ ľ D OCH₂ EYou attempt to synthesize ethyl isopropyl ether using the following scheme, but you find that you are getting a large amount of some minor product. Br NaOCH2CH3 HOCH,CH3 a) What is the side product you are forming and what would be a better way to synthesize ethyl isopropyl ether? b) What would be the major product of the following reaction? Br NaOCH,CH3 HOCH,CH3
- Fill in the boxes with the missing products of each reaction. For box B to C, suggest a mechanism for that reaction step. EtO₂C CO₂Et NaOEt EtOH NaOEt EtOH Br H3O+ A BOn acid-catalyzed dehydration, 1-butanol (CH3CH2CH2CH2OH) can be converted to 1-butene. Write out an equation for the reaction Assign each the appropriate symbol for the mechanism of the reaction (E1 or E2) Draw a suitable mechanism for the reactionCycloaddition reactions are useful tools for building rings by using electrons to form o bonds between atoms. For the products below, identify a reasonable set of starting materials to make each product. NH₂ O g O Which of the two sets of starting materials you proposed above do you think would react more quickly? Think about what makes a cycloaddition fast or slow and justify your answer.