5. Now draw the proper arrows for these transformations. These are all first semester mechanisms. Br CI Br Br Br Br RO ROH Н CI н CH, O CH3 „CH3 CH3 -CH3 CH3 н Н но H-o-S-OH
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- 3. The following three SNAR transformations follow different mechanisms. Draw an intermediate or transition state for each reaction that relates the correct mechanism. Write a short sentence as to why that is the correct intermediate for the reaction. Reaction 1: Reaction 2: NO2 NO2 NO₂ + NaOMe NO2 + NaOH2 1. aq NaHCO3. 100 C 2. H₂O+ OMe NO2 NO₂ OH ŇO₂ NO2 Reaction 3: CFa Br CF3 8--2 + NaNH2 NH3 NH₂ Intermediate/transition state Intermediate/transition state Intermediate/transition state3. Which of the following are nucleophiles? 1 CH3NH2 2 CH3O 3 H3CC=CHFor the reaction shown below, circle the major product obtained when the | reaction is allowed to reach equilibrium. Place a box around the product that is formed the fastest. а H2C= CI H-CI CIH2C CIH,C H3C CI CI `CH3 H2C CIH,C H;C CI
- Your task is to convert 2-bromobutane to 1-butene in highest yield. Which reagents would you use? O KOH/H2O O KOH/CH,OH O CH3CH2ONA/CH3CH2OH O CH3ONA/CH3OH O (CH3)3COK/(CH3)3COHIn the presence of light or heat, diazomethane (CH,N2) creates a carbene, which then adds to an alkene to make a cyclopropane. In the boxes below. draw the mechanism arrows for the reaction. H INEN: INE N:10. a) In the box at the left, indicate whether the reaction takes place through an SN2, SN1, E2, or E1 mechanism. b) Draw the mechanism and predict the product, including stereochemistry. OH H3O* heat CI NaCN DMF KOt-Bu Br HOH HCI
- Examine each reaction. Determine the mechanism (E1, E2, SN1, or SN2) for each reaction. SN1 E2 E1 SN2 CH2CH3 OocCHa)s CH2CH3 CH2CH3 А. Br major product Br DBU В. OOCH,CH, C. „Br Ooc(CH)a D.Draw the most stable resonance form for the intermediate in the following electrophilic substitution reaction. LOCH3 LOCH3 HNO3 / CH3CO₂H O₂N • 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.The reaction of methylpropene with HBr in ether gives one of the two products below as the major product. Br HBr Br ether Product A Product B Product would have a higher energy transition state for the formation of the intermediate leading to it. O A O B O Both products would have the same transition state.