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Please help me question number 10! Thank you!
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- Q10. For each of the following reactions (a-b), predict whether the substitution is more likely to occur following an Sn1 or Sn2 mechanism; explain your reasoning. Draw the products of each nucleophilic substitution paying particular attention to the stereochemistry of carbon 1. a) Br, CH3 MeOH H3C b) Br NaOH 1 DMF* H3C *N,N-dimethylformamide20. (a) Show all steps in the synthesis of 2-pentene from 2-bromopentane. Show the structure of all reactants and product. CH3CHBrCH2CH2CH3 -------> CH3CH=CHCH2CH3 (b) Correctly identify the mechanism in (a) above(SN2, SN1, E2, E1)1. Show examples and structures the order of reactivity in SN2? 2. Show some SN2 reactions with Bromo-Ethene. Give 9 examples of Nucleophiles Nu- 3. Rank the following compounds in order of their expected reactivity toward SN2 reaction CH3Br, CH3OTos, (CH3)2CHCI 4. Show with examples for the influence of solvents in the SN2 reaction. 5. Show the Mechanism of the SN1 Reaction with the proper Directions of the arrows?
- 1. (cont.) CH3 Cl- -CF3 CH;NH2 (i) H ОН ČH,CH3 CH, 1. PBr,/pyridine (j) ОН 2. NaOH/DMSO 2. Using the given starting material and any necessary reagents indicate how the following syntheses can be carried out. ОН CH;CH,CHCH3 CH,CH,CH,COH OH CH;CH,CHCH3 CH;CH,C=CH .OTS OCH3 CH3 CH3 ОН 3. Propose a mechanism that accounts for the formation of the product shown during the following observed reaction. Be sure to show all intermediates. ОН H+Which one of the following reactions would produce-t-butyl-methyl ether-in-high-yield?¶ ¶ A. → CH3ONa+ (CH3)3CBr¨¶ B. → CH3OH+ (CH3)3COH in the presence of H₂SO4 at 140°C¶ C. → CH3CI+ (CH3)3CBr in the presence of NaOH¶ D. (CH3)3CONa+ CH3Br.¶ A C ODQ10. For each of the following reactions (a-b), predict whether the substitution is more likely to occur following an Sn1 or Sn2 mechanism; explain your reasoning. Draw the products of each nucleophilic substitution paying particular attention to the stereochemistry of carbon 1. а) Br CH3 MeOH H3C b) Br NaOH DMF* H3C *N,N-dimethylformamide
- Which set of reagents would be appropriate to synthesize bromobenzene from benzene? 1. HNO3 in H2SO4; 2. H2Cr04 and heat 1. H2CrO4 and heat; 2. H2 Pd/C Br2 and FeBr3 1. CH3CH2CHCI and AICI3; 2. H204 and heat 4B12 and Fe Heat and Br2 Br2, HCIWhat is(are) the major final product(s) formed during the following sequence of reactions? 01 11 V 1.0₂ 2. (CH₂)₂S C₂H₂O 2 identical molecules ||| =PPhy < IV орна3) Tre 2.) Given the final product and reagents for each step in the forward synthesis of this nd t cyclohexane-containing internal alkyne, please propose the structures for the synthetic the cur intermediates A-E below. s KOC(CH3)3 Br2 KOC(CH3)3 NaNH2 E CH3I (2 equiv) DMSO CHOH but-2ayne N-chlorosucclinimide
- The reaction of 2-bromopropane and sodium ethoxide in ethanol reacts 6.7 times 1). faster than 2-bromo-1-deuteriopropane under the same conditions. Explain what mechanism this data is consistent with, and why. H(D) ELOH Br 2) the following reactions. Explain the reason(s) for the difference in relative rates and regiochemistry in Fast Slow EtO EtO ETOH ETOHThe second-order rate constant (in units of M-1s-1) for acid-catalyzed hydration at 25 °C is given for each of the following alkenes: a.Calculate the relative rates of hydration of the alkenes. (Hint: Divide each rate constant by the smallest rate constant of the series: 3.51 x 10-8.) b. Why does (Z)-2-butene react faster than (E)-2-butene? c. Why does 2-methyl-2-butene react faster than (Z)-2-butene? d. Why does 2,3-dimethyl-2-butene react faster than 2-methyl-2-butene?6. The following reaction will not occur as written. Choose the best answer for how to "fix the overall reaction. adaing H&DH@auti many 3" 31 tom FOH -DH 1) BH3 THF OH H2) H₂O2, NaOH 2⁰ у таж The starting material should be an alkyne functional group instead of an alkene. In order to add an -OH group across an alkene a reducing agent like H₂, Pt is needed. The-OH group should add to the anti-Markovnikov position instead of the product shown. A polar aprotic solvent is needed for this reaction, like DMSO. ausi-