to convert aniline to 1,3,5-tribromo aniline brominate aniline to get 2,4,6-tribromoaniline and then convert -NH2 TO -OH by diazotization and treat it with Zn dust
I guess the question is aniline to 1,3,5 tribromobenzene.
after diazatisation , u can directly convert the diazonium salt into the final product by using H3PO2 or Ethanol . u don't need to first convert to OH and then use Zn
check the q once more...!