бутан---изобутан--2-метилбутанол-2 --- 2 -метилбутен-1

1)CH3-CH2-CH2-CH3(AlCl3)=CH3-CH(CH3)-CH3

2)CH3-CH(CH3)-CH3+Cl2(t)=CH3-CCl(CH3)-CH3+HCl

3)CH3-CCl(CH3)-CH3+KOH=CH3-COH(CH3)-CH3+KCl

CH3-COH(CH3)-CH3+Cl2(t)=CH3-COH(CH3)-CH2Cl+HCl

CH3-COH(CH3)-CH2Cl+2Na+Cl-CH3=CH3-COH(CH3)-CH2-CH3+2NaCl

CH3-COH(CH3)-CH2-CH3(t,H+) = CH2=C(CH3)-CH2-CH3+H2O

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