68) 1. CH3-CH2-CH3-->(кат. Mn; t) CH3-CH=CH2+H2
2. CH3-CH=CH2+ Br2--> CH3-CH(Br)-CH2(Br)
3. CH3-CH(Br)-CH2(Br) + Zn-->(t) CH3-CH=CH2+ZnBr2
4. CH3-CH=CH2+ H2O-->(t; восстановление) CH3-CH2OH
69) 1. C2H4+HCl-->C2H5Cl
2. C2H5Cl+2Na+C2H5Cl-->CH3-CH2-CH2-CH3+2NaCl
3. CH3-CH2-CH2-CH3+Br2-->(свет) CH3-CH2-CH(Br)-CH3+HBr
4. CH3-CH2-CH(Br)-CH3+ KOH(спирт)-->(t) CH3-CH=CH-CH3+KBr+H2O
5. CH3-CH=CH-CH3+KMnO4-->(восстановление; t) 2CH3COOH+MnO2+KOH
70) 1. 6CO+8H2-->2C3H8+O2
2. C3H8-->(кат. Mn; t) C3H6+H2
3. C3H6+H2O-->(восстановление; t)CH3-CH(OH)-CH3
4. CH3-CH(OH)-CH3-->(H2SO4;t) CH3-CH=CH2+H2O
5. CH3-CH=CH2+KMnO4+H2O-->(t)CH3-CH(OH)-CH2(OH)+ MnO2+KOH
71)1. CH3-CH2-CH3-->(кат.Mn;t)CH3-CH=CH2
2. CH3-CH=CH2+H2-->(кат.Ni) CH3-CH2-CH3
3. CH3-CH2-CH3+Br2-->(свет) CH3-CH2-CH2Br+HBr
4. CH3-CH2-CH2Br+KOH(спирт)-->(t)CH3-CH=CH2+KBr+H2O
5. CH3-CH=CH2+Br2-->(t) CH3-CH(Br)-CH2(Br)
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