Table 2.

Sulfide oxidation with O₂.

Entry	Type of sulfide			Catalyst or promoter	Oxidant	Solvent	Reaction conditions	Scope and yield	Ref.
	Ar−S‐Ar	Ar−S‐alkyl	alkyl‐S‐alkyl
1	yes	yes	no	[C8H17N(CH3)3]3HIV9O28 (40 mg per 0.3 mmol sulfide)	O2 (1 atm)	Decalin	90 °C, 4–12 h	4 examples 63–100 %	[11b]
2	yes	yes	no	Co‐SiO2@Ti−Si (50 mg per mmol sulfide) methylene hydrocarbon	O2 (1.0 MPa)	MeCN	120 °C, 4 h	6 examples 14–99 %	[16a]
3	no	yes	yes	2‐methyl‐1‐propanal (5.0 equiv.)	O2 (1 atm)	MeCN	70 °C, 3–6 h	7 examples 51–78 %	[16b]
4	yes	yes	no	–	O2 (1 atm)	BBE[a]	100 °C, 20 h	38 examples 63–95 %	[16c]
5	yes	yes	no	–	O2 (1 atm)	DPDME[b]	100 °C, 12–30 h	20 examples 48–98 %	[16d]

[a] BBE=bis(2‐butoxyethyl)ether. [b] DPDME=dipropylene glycol dimethyl ether.