Improvement the Activity and Selectivity of Fenton System in the Oxidation of Alcohols

Table 4

Oxidation of several alcohols^a.

Entry	Substrate	Temp. (°C)	Product	Con. (%)	Sel. (%)
1		25		36.7	93.6
2		25		4.3	>99.9
3		25		12.3	>99.9
4		55		50.5	>99.9
5		55		4.8	>99.9
6		55		13.3	90.0
7		55		49.3	97.5
8		55		41.1	96.0
9		55		54.8	82.5

aCatalyst: FeSO₄/NHPI, 20 mmol of benzyl alcohol, 2.2 equiv. of H₂O₂ (30 wt% in water), reaction time: 0.5 h. H₂O₂ was added with a syringe pump by 0.2 mL/min speed.