thors.lab - 4-1-2020 at 21:24
Hi,
I will be performing the Bamberger rearrangement as per this procedure..
The procedure calls for the use of a dichromate solution to determine whether the reaction has completed. Oxidation of p-aminophenol yields some
quinone imine (side note, not sure how to name this compound. Care to shed light? O=Ph=NH), while oxidation of the phenylhydroxylamine will of course
yield nitrosobenzene. The procedure then says to smell the solution to determine the presence of the nitrosobenzene.
Of course I don't want to go around smelling nitrobenzene and nitrosobenzene. I also don't have any dichromate salts right now and would rather not
have to buy them for this procedure. Additionally if I were to perform this on a smaller scale I would not want to waste product checking.
Does anybody have any alternative methods for gauging the completion of the Bamberger rearrangement?
Metacelsus - 5-1-2020 at 06:07
TLC would probably work. Check for disappearance of your starting material and formation of a new spot.