Помогите осуществить цепочку превращений!) CH4---C2H6---C3H8---C6H14---C6H12---C6H6

СH4 + Cl2 = CH3Cl + HCl
2CH3Cl + 2Na = C2H6 + 2NaCl

С2H6 + Cl2 = C2H5Cl + HCl
C2H5Cl + CH3Cl +2Na = C3H8 + 2NaCl

С3H8 + Cl2 = C3H7Cl + HCl
2C3H7Cl + 2Na = C6H14 + 2NaCl

C6H14 + 2Cl2 = C6H12Cl2 + 2HCl
C6H12Cl2 + 2Na = C6H12 + 2NaCl

C6H12 = C6H6 + 3H2