Methyl 3 2 1 iii a molecule with 4 centers of

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Methyl > 3 ° > 2 ° > 1 ° iii) A molecule with 4 centers of chirality can have at most: 2 Stereoisomers 4 stereoisomers 8 stereoisomers 16 stereoisomers none of the above iv) Circle the correct ordering of leaving group ability: F - > Cl - > Br - > I - I - > Cl - > H - > OH 2 CH 3 SO 3 - > CH 3 CO 2 - > OH - > NH 2 - I - > Cl - > CH 3 - > CH 3 CO 2 - v) Circle the correct ordering of nucleophilicity: I - > Cl - > MeOH > F - Cl - > F - > I - > MeOH I - > MeO - > NH 3 > MeOH I - > MeO - > MeOH > NH 3
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NAME:________________________________ 3 1b. ( 16 pts) For each of the following one-step transformations, use curved-arrow notation to show the movement of electrons. Be sure to show any non-bonding electrons that are being moved. Show all formal charges. a) b) Br C H Et Me SMe C H Me Et + + Br C Et H H S Me O + O C Et H H O Me O Me c) d) + C C H H + H H H O Me H C C H H H H + CH 3 OH 2 C C H H + H H H Br O H H 2 O C C H H H H
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NAME:________________________________ 4 2. (18 pts) Match each of the following reactions to the correct reaction profile ( i iv ) shown below: Me 3 CCl + PPh 3 ; Me 2 CHI + KBr; Me 3 CBr + HOCH 2 CH 3 ; CH 3 CH 2 Br + NaOCH 2 CH 3. E Reaction Coordinate E E E A B C D Reaction Coordinate Reaction Coordinate Reaction Coordinate E F G H I J (i) (ii) (iii) (iv) K L M N In the boxes provided, draw the structures of the species present at the energy diagram points A, B, F, H, K, and M: A B F H K M C Me Cl Me Me δ δ C Me Me Me C Me Me Me C Me O Me Me C Me Br H H δ δ EtO C Me I Me H
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  • Spring '04
  • Whiteshell
  • Chemistry, Organic chemistry, Trigraph, Reaction coordinate, N O F Ne Si P S Cl Ar Ge, Cl Et Cl, H H Br C C H H H H C C H H

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