CaO-CaC2-C2H2-C6H6-C6H5NO2-NH2-C6H5Br2NH2
1)CaO+3C--->CaC2+CO 2)CaC2+2H2O--->C2H2+Ca(OH)2 3)3C2H2(t,кат)--->C6H6 4)C6H6+HNO3(t,H2SO4)--->C6H5-NO2+H2O 5)C6H5-NO2+3H2(Fe,HCl)--->C6H5NH2+2H2O 6)C6H5NH2+3Br2--->C6H2Br3NH2+3HBr