Table 5.

Role of oxidant

Entry	Catalyst	Loading	t-BuOOH	Yield/%a
1	CuCl	5 mol%	Yes	90
2	CuCl	5 mol%	No	–
3	CuCl2	5 mol%	Yes	78
4	CuCl2	5 mol%	No	Traces
5	CuCl	1 equiv.	No	–
6	CuCl2	1 equiv.	No	35

^aGC yield with dodecane as internal standard