correct answers please. thanks Problems 11-13 are based on the following reactio
ID: 558606 • Letter: C
Question
correct answers please. thanks
Problems 11-13 are based on the following reaction F: ProductsBr solvents CH3CN 11. Based on the reaction conditions and the structure of the electrophile, the reaction is pathway(s). Fill in the blank by selecting the expected to follow correct option. (A) Only S1 (B) Only SN2 (C) Only E1 (D) Only E2 (E) Both S1 and E1 (F) Both SN2 and E2 12. Among the ethers indicated below, identify ALL product(s) obtained in the above reaction. You MAY need to select multiple answers. 13. Identify the correct energy profile for this reaction. reaction coordinate reaction coordinate reaction coordinate reaction coordinateExplanation / Answer
Solvent effect:
Polar aprotic solvents: Polar aprotic solvents are polar enough to dissolve charged species (in this case halide ion, F-) but do not donate hydrogen bonds. This means that in solvent acetonitrile (CH3CN), nucleophilicity correlates much better with basicity – and hence decreases as we go down the periodic table.
Therefore nucleophilicity correlates with basicity, and decreases as we go down the periodic table.
Hence F- becomes good nucleophillic in polar aprotic solvent.
Polar aprotic solvents tend to favor substitution (SN2).
11.
Answer is option (B) Only SN2
12. Answer is structure (B).
F (nucleophile) will have opposite stereochemistry of (Br) leaving group.
13.
Answer is option (A).
SN2 reaction is a one-step reaction.
Transition state is the highest in energy.
Energy of reactant is higher than that of Product.
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