C2H6>C2H5-I>C2H5OH>CH3-C(=O)H>CH3-C(=O)OH>CH3-C(=O)-NH2
C2H6 + I2 -hv> C2H5I + HI C2H5I + NaOH(водный) -> C2H5OH + NaI C2H5OH + O2 -> CH3CHO + H2O CH3CHO + [O] -> CH3COOH напрямую амид не получают: CH3COOH + PCl5 -> CH3COCl + POCl3 + HCl CH3COCl + 2NH3 -> CH3CONH2 + NH4Cl