Table 2. The influence of amine on the selective aerobic oxidation of thioanisole under visible-light irradiation ^a .

Entry	Amine	Conv. b (mol%)	Select. b (mol%)
1	None	7	99
2	Isopropylamine	30	98
3	Butylamine	35	98
4	tert-Butylamine	44	97
5	Trimethylamine	50	97
6	Triethylamine	58	96
7 c	tert-Butylamine	28	97
8	Triethanolamine	14	99

^aReaction conditions: 0.3 mmol of thioanisole, 0.03 mmol of amine additive, 40 mg of Degussa P25 TiO₂, 300 W Xe lamp, 5 mL of CH₃OH, λ > 400 nm, 0.1 MPa of O₂, 5 h.

^bDetermined by GC-FID using chlorobenzene as the internal standard, conversion of thioanisole, selectivity of methyl phenyl sulfoxide.

^c0.015 mmol of amine.