Yes, I know there probably is a thread on just A-level Chemistry. But I wanted to dedicate a thread just to this d*amned topic anyway.

My question: How do you turn nitrobenzene into 1,3 - dinitrobenzene? And then from that to 1,3,5 trinitrobenzene (?)? I'm not sure if I'm naming the compounds right. Hence, the '?' in brackets.

EDIT: I know you need to add NO2+ ions... But what's the reagent? Conditions?