Someone has described elsewhere on APUG, how these quinoxalines may be easily made by simpler chemicals. Unfortunately, the scheme uses p-Phenylene Diamines and the real synthesis uses o-Phenylene Diamines. Mix the right one with Diacetyl, and in one step you have the Quinoxlaine. Easy one step.

Not explosive, nor very corrosive.

FB papers are not a good idea here. RC would work.

PE