CH3COONa + NaOH ---> CH4 + Na2CO3
2CH4[tex]\xrightarrow[1500°C]{làm lạnh nhanh}[/tex] C2H2 + 2H2
3C2H2[tex]\xrightarrow[600°C'']{Bột C}[/tex] C6H6
C6H6 + Br2[tex]\overset{Fe,t^{\circ}}{\rightarrow}[/tex] C6H5Br + HBr
C6H5Br +2 NaOH[tex]\xrightarrow[T^{\circ}cao]{Pcao}[/tex]C6H5ONa +NaBr +H2O
C6H5ONa + HBr --> C6H5OH+ NaBr
C6H5OH + Br2 ---> C6H2Br3OH +HBr