14D_f10_e01_key

14D_f10_e01_key - Chemistry 14D Fall 2010 Exam 1 Solutions...

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Chemistry 14D Fall 2010 Exam 1 Solutions Page 1 Statistics : High score, average, and low score will be posted on the course web site after exam grading is complete. The exam is ready to be picked up when these numbers are posted. Some questions have more than one answer, even though only one answer may be listed here. To see the projected course grade cutoffs, consult the grading scale on the Chemistry 14D course web page. 1. (a) OCH 3 and OCH 3 These structures are resonance contributors of the same carbocation; i.e., they are identical. (b) F 3 C O O Nucleophilicity decreased by resonance and inductive effects, regardless of solvent . (c) H 3 CO S O O CF 3 Verify by drawing resonance contributors that benzene ring does not delocalize negative formal charge of RSO 3 - group . (d) CH 3 OH (e) Br S N 2 does not occur at a 3 o carbon, regardless of how good the leaving group is . (f) CH 3 Ph CH 3 This alkene is internal, tetrasubstituted, and conjugated . (g)
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This note was uploaded on 03/12/2012 for the course CHEM 14D taught by Professor Hardinger during the Winter '08 term at UCLA.

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14D_f10_e01_key - Chemistry 14D Fall 2010 Exam 1 Solutions...

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