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Unformatted text preview: addition, circle the correct stereochemistry, R or S, of each substrate and product. (10 pts each) Br CN R o r S R o r S PCl 5 R o r S R o r S Me H H H Cl O CN Me H H H Cl Cl Cl IV. Circle which reaction would take place faster. Then explain why the reaction of your choice would be faster. Use drawings and narratives (concise), as appropriate. (45 pts) Cl NaOEt IVa. Circle one reaction. Cl NaOEt Explain here. Cl H H Me Cl Me H anti periplanar Me Me H syn periplanar MeOH IVb. Circle one reaction. Br MeOH Explain here. Br OMe OMe IVc. Circle one reaction. Explain here. Br I I Cl I I S N 1 rxn: tertiary carbocation is more stable than the secondary. Bromide is a better leaving group than chloride. Because bromide is more stable due to larger polarizability....
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- Fall '07
- Reaction, 10 pts, Carbocation, carbocation center, Cl KOtBu Cl