Sodium Hypochlorite/Dowex 1X8-200: an Effective Oxidant for the Oxidation of Aromatic Amines to Quinones

Comparative Baeyer-Villiger oxidation of cyclohexanone on Fe-pillared clays and iron tetrasulfophthalocyanine covalently supported on silica

“…This proposal was later extended by Kaneda et al using a combination of molecular oxygen and aldehydes over Fe containing catalysts [27][28][29][30][31][32][33][34]. This process has been extended to various redox systems supported by cation exchangers [35], MCM-41 [36], modified silica [37] or zeolites [38] using O 2 /PhCHO at low reaction temperatures. The catalyst was reusable without any appreciable loss in its activity and selectivity.…”

Oxidation of 4-methoxyanilines to 1,4-benzoquinones using ceric ammonium nitrate (CAN)

“…While a number of methods have been reported for this oxidation,4–12 they can be tedious due to long reaction times, complicated work-up procedures or low yields and often work best when using anilines soluble in water.…”