Group moved as the following order tertiary alkyl>aryl>h> secondary alkyl >primary alkyl> methyl CF3CO3H CH3-C-C(CH3)3 CH2Cl2 CH3-C-OC(CH3)3 CF3CO3H Ph-C-CH2 CH3 CH2CI Pho-c-och2 CH3 PhC○c-PoCCF3 CO3 H CH2 Cl 2 CH3 C OC(CH3 ) 3 O CH3 C C(CH3 ) 3 O Ph C CH2 CH3 O PhO C OCH2 CH3 O CH2 Cl 2 CF3 CO3 H CF3 CO3 H CH2 Cl 2 Ph C O PhO C O Group moved as the following order: tertiary alkyl＞aryl＞H＞secondary alkyl ＞primary alkyl＞methyl