二甲基苯磺酸钠 、
邻苯二甲酸亚胺 、 在
sodium o-toluenesulfonate 作用下,
以a commercially available sodium toluene sulfonate from Ruetgers-Naese (0.15 mol sodium toluene sulfonate with a content of 93%) instead of phthalimide to yield a product in which toluene sulfonic acid methyl 6,13-dihydro quinacridone having a molecular weight of 500的产率得到sodium o-toluenesulfonate