2 (6.3 mg, 0.02 mmol) dissolved, [bmim] pf6 (0.5 ml).

And methanol (3.2 ml) in a 20 ml ampoule. Sulfide (1 mmol)

Followed by hydrogen peroxide (30%, water) (170

L). Stir the reaction for a given time (reaction

Followed by thin layer chromatography) to remove methanol.

The residual ionic liquid was extracted with ether (3 15ml). Treating sodium in combination with ether layer

Lotus seed and water washing (3 10 ml). Ether stage

Drying with sodium sulfate, filtering, and vacuum concentrating. that

Product purification routine or biotage rapid chromatography.

1 hr, and then p-tolylmethyl sulfoxide is isolated (Article 8 B).

Reaction time, 78%. Nuclear magnetic resonance data show that.

The previously reported .4 transformation (Figure 3) determines that

The reaction mixture was analyzed by gas chromatography: TR (tolylmethyl sulfide).

) 12.7 minutes; TR (tolyl methyl sulfoxide)) 17.2 minutes.

The general procedure is to recover ionic liquid.

Catalyst system. Catalyst precursor 2 (6.3 mg 0.02 mmol)

Dissolved in [bmim] pf6 (0.5) and methanol (3.2 ml).

20 ml ampoule. Sulfide (1 mmol) was expressed at that time, and then

Hydrogen peroxide (170L). After a given time, the reaction (reaction, followed by thin layer chromatography) is stirred, in which methanol

And diethyl ester is extracted from the remaining ionic liquid.

Alkaline ether (315ml). Combined ether layer therapy

Sodium hydrosulfite and water washing (10ml). aqueous phase

Extract with ether (3 10 ml). merge

The ether stage was dried with sodium sulfate, filtered and concentrated.

Vacuum. The product was isolated by flash chromatography. that

After the ionic liquid phase, it is evaporated, while the rest

Ether. Adding sulfide (1 mmol) and hydrogen peroxide (1.5 equivalent);

After that, except methanol (3.2 ml).