question_answer 1)

How would you convert the following compounds into benzene: (i) Ethyne (ii) Ethene (iii) Hexane.

Answer:

(i) or (ii) \[\underset{Ethene}{\mathop{{{H}_{2}}C=C{{H}_{2}}}}\,\xrightarrow{B{{r}_{2}}/CC{{l}_{4}}}\underset{1,2-Dibromoethane}{\mathop{\underset{\underset{\text{Br}}{\mathop{|}}\,}{\mathop{{{H}_{2}}C}}\,-\underset{\underset{\text{Br}}{\mathop{\text{ }\!\!|\!\!\text{ }}}\,}{\mathop{C{{H}_{2}}}}\,}}\,\] (iii)