C4H10 --> C4H8 ---> C4H9Cl ----> C4H9OH ---KMnO4,H2SO4--->C4H8O ----> C4H10O
1) CH3-CH2-CH2-CH3 ---300^, Cr2O3---> CH3-CH=CH-CH3 + H2
2) CH3-CH=CH-CH3 + HCl ----> CH3-CHCl-CH2-CH3
3) CH3-CHCl-CH2-CH3 + NaOH(водный) ------> CH3-CH(OH)-CH2-CH3 + NaCl
4) 5CH3-CH(OH)-CH2-CH3 + 2KMnO4 + 3H2SO4 -----> 5CH3-C(O)-CH2-CH3 + 2MnSO4 + K2SO4 + 8H2O
5) CH3-C(O)-CH2-CH3 + H2 ----t,Ni----> CH3-CH(OH)-CH2-CH3