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5. For each reaction below, indicate the major reaction pathway (SN2, SN1, E2 or E1) and...
Draw the major product and label as SN2, SN1, E2, or E1 7. Draw the major products of the following reactions, and label the reaction as SN2, SN1, E2 E1. (Darkly shaded bonds are wedged) Br NaOMe NaCN H2SO4 OTs NaSH OTs H20 NaOMe Br KOtBu OH HBr HBr OH
For the following reaction, (a) predict the reaction pathway (SN2, E2, SN1/E1) based on our predictive model and (b) draw the product(s). Provide the complete curved arrow mechanism for the rearrangement shown here. Hint: The first step makes the alcohol a better leaving group using a proton source. oleme Oy Complete the following sequence by filling in missing reagents or providing the product(s) of a reaction. Sequential steps, if necessary, should be numbered. OMs major product minor product
describe each as Sn1, Sn2, E1 and E2 then draw a curved arrow mechanism for each reaction. NaSH DMSO SH KOH HO DMSO Br NANH NH3 OTs NH TsO TsO CHs CH3 Nal CH3 acetone CH O O
determine whether the reaction is Sn1, Sn2, E1 or E2 & draw the major product Br Me TH NaOET Me H D Br EtOH Me Ph
For the following reaction, (a) predict the reaction pathway (SN2, E2, SN1/E1) based on our predictive model and (b) draw the product(s). ONa
3. Shown below are a series of reactions. Predict the major product for each of them. Remember, you will need to first decide whether the reaction occurs by an SN2, SN1, E2, or E1 before you can determine what the product will be. Label each as SN2, SN1, E2, or E1. Hint: First decide whether S2/E2 or S1/E1 is favored, and then decide whether the reaction pathway goes by a substitution or elimination reaction. SN2 / SN1 E2/E1 Na DMSO,rt...
termine whether each of the following reactions occur through an SN1, SN2, E1, or E2 mechanism. O E1 Br CH3SNat CH3CN (b) Br CH30 Na MeOH Oooo ooooo O-K (c) t-BuOH
Analyze then draw the expected products of each of the following. Determine if it’s E1/E2/Sn1/Sn2 Br #5 OMs tBuOH OMs KOtBu DMSO OMs NaCN OMs
10. 26. Predict the major product and mechanism (E1, E2, SN1, or SN2): КОССH), acetone Br Predict the result of reacting НЕг ROOR НBr
Q1. Identify the reaction mechanism most likely to take place (E1, SN1, E2, SN2 or a combination of these) in each of the following cases. Draw the major product(s), include stereochemistry when relevant. Br -OtBu Br NaCN, DMF → CI Носна 1. Nal/acetone 2. NaCN/DMF NaoMe H2SO4 OH Lyon CN (CH3)2CO CI NaOH →