Substrate scope for oxidation reaction under ultrasonic irradiation^a.

Entry	Alcohol	Product	Time (h)	Yieldb (%)	Selectivity (%)
1			2.0	90	100
2			2.0	82	100
3			2.0	86	100
4			2.5	80	100
5			2	85	100
6			2.5	82	100
7			2.0	84	100
8			2.0	88	100
9			1.5	94	100
10			1.5	93	100
11			4.0	15	—
12			4.0	20	—
13			5.0	Trace	—
14			7.0	Trace	—
15	CH3(CH2)6CH2OH	—	—	—	—

^aReaction condition: benzyl alcohol (1.0 mmol), TBHP (1.5 mmol), catalyst (sample MnF-1; 15.0 mg).

^bIsolated yield.