5 Baeyer-Villiger Rearrangement CH2Ch CH2-C-Ph CF3CO3H CH2-c-oPh CH3COOEt cercor5 Baeyer-Villiger Rearrangement CH3 C Ph O CF3 CO3 H CH2Cl 2 CH3 C OPh O CH3COOEt CF3 CO3 H O O O