Acetone → 1-((Trifluoromethyl)thio)-2-propanone

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-propanone (0.25 mole), ethanol (0.49) and dichloromethane (75 ml) was introduced into a sealed and pressure tested vessel having a volume of about 500 ml under reduced pressure. Trifluoromethanesulfenyl chloride (0.22 mole) was then added to the cooled, evacuated vessel. The vessel was warmed to about 25°C and then rocked for five days. The vessel was vented through a cold gas trap (-78°C) to trap any unreacted trifluoromethylsulfenyl chloride gas and then through a scrubbing system to remove the vented hydrogen chloride gas. Residual liquid was transferred to a flask and distilled to give about 24 g of 1-trifluoromethylthio-2-propanone. The structure of the purified product (b.p. 51°-52°C/22 mm Hg) was confirmed by spectral and elemental analyses.

Provenance & Evidence