Page 1186 - Advanced Organic Chemistry Part B - Reactions & Synthesis
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      CHAPTER 12
      Oxidations



















































                       Fig. 12.P18. Comparison of the computed energy profiles for 18-A and 18-B. Reproduced from J. Org.
                       Chem., 67, 2447 (2002), by permission of the American Chemical Society.


                        12.19. Predict the structure and stereochemistry of the Lewis acid–catalyzed
                              rearrangement of the following epoxides.

                           a.
                                      OTMS                    b.              CH 3
                                        O                           CH 3  CH 3   CH = O
                              CH 3
                                               OTIPS  TiCl 4
                                                                                      SnCl 4
                                                                          O
                                           OTIPS
                                    CH 3 CH 3
                                                              TBDMSO
                                                                         CH 3
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