Curvedarrows - 1 C C H Br H 3 C H H 3 C H H 3 CO C C H 3 C H 3 C H H H 3 CO H Br 2 H C CH 2 O H C CH 3 O H O O CH 3 H 3 C C H H 3 C H 3 C CH 3 CH 3

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CH 310M/318M Dr. Brian M. Bocknack Curved Arrow Formalism – Practice Problems The following problems are designed to allow you to practice using the curved arrow formalism that we discussed in lecture (Monday, 2/25 or Tuesday, 2/26). These problems will not be collected or graded! Answers will be posted on the course website on Monday, 3/3 (when the answer key for Graded Homework Problem #09 is posted). In Questions 1 through 4, draw curved arrows on the reactant side of the reaction arrow to show how electron pairs move to produce the indicated products. In Questions 1 through 3, you should also identify the nucleophile and the electrophile involved in the reaction.
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Unformatted text preview: 1. C C H Br H 3 C H H 3 C H H 3 CO C C H 3 C H 3 C H H H 3 CO H Br 2. H C CH 2 O H C CH 3 O H O O CH 3 H 3. C C H H 3 C H 3 C CH 3 CH 3 H 3 CO C C H 3 C H 3 C CH 3 CH 3 H 3 CO H 4. O OCH 3 O OCH 3 Problems continue on the next page… CH 310M/318M Dr. Brian M. Bocknack In Problems 5 through 8, curved arrows are used to show the movement of electron pairs. Draw the structures that result from the curved arrows shown. Be sure to indicate all nonzero formal charges clearly. Also be sure to show all lone pairs. 5. O CH 3 CH 3 H HO 6. C C H H H CH 3 CH 3 O H H 7. H 3 C O OH CH 3 CH 3 8. H 3 C C CH 3 O H O H H...
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This note was uploaded on 04/09/2008 for the course CH 310M taught by Professor Iverson during the Spring '05 term at University of Texas at Austin.

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Curvedarrows - 1 C C H Br H 3 C H H 3 C H H 3 CO C C H 3 C H 3 C H H H 3 CO H Br 2 H C CH 2 O H C CH 3 O H O O CH 3 H 3 C C H H 3 C H 3 C CH 3 CH 3

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