Table 4. Optimisation of the Reaction Conditions when catalysed by 10p.

Entry	Catalyst amount (mmol)*	4 Yield (%)	Entry	Reaction time**	4 Yield (%)
1	0.01	16.58	11	0	3.40
2	0.02	19.76	12	10 min	6.87
3	0.03	22.79	13	20 min	9.91
4	0.04	20.14	14	30 min	13.99
5	0.05	20.17	15	40 min	15.38
6	0.10	19.65	16	50 min	20.78
7	0.50	19.54	17	60 min	22.15
8	1.00	18.34	18	70 min	19.98
9	1.50	18.20	19	80 min	16.20
10	2.00	17.97	20	90 min	14.25

*Reaction conditions: (−)-Sclareol 1 (10 mmol), catalyst 10 p (relative equiv), 1,4-dioxane (7 mL), H₂O₂ (5 mL), 70 °C, 2 h; then 90 °C, 1h; GC yield.

**Reaction conditions: 1 (10 mmol), catalyst 10 p (0.03 equiv), 1, 4-dioxane (7 mL), H₂O₂ (5 mL), 70 °C, 2 h; then 90 °C. Reaction time starts counting when the reaction system temperature rises to 90 °C.