Table 1.

Comparison of the catalytic activity of TfOH and PPh₃AuOTf in the addition of phenols to alkenes.

Entry	R1	R2	T (°C)	Catalyst
				TfOH	Ph3PAuOTf
1		NO2	rt	93	–
2			85	trace	81
3		OMe	rt	57	–
4			85	trace	58