catalyst: triethylamine or N-methylmorpholine or; dimethylanilin or pyridine in benzene byproducts: (C6H5)CNN(C6H4Br); freshly prepd. soln. of (C6H5)CH(OOH)N2(C6H4Br) (benzene) was stirred in the presence of an amine in the dark under N2 until all of the educt decompd. (ca. 1h); extn. with water; detn. of H2O2 iodometric or by potassium permanganate titrn.;
