m-Chloroperbenzoic acid → 5-Acetyl-2-(methanesulfinyl)thiophene-3-carbonitrile

Participants

Reaction Conditions

Reaction Steps

5.0 g of 83% m-chloroperbenzoic acid are gradually added while stirring at a temperature of 0°-5° C. in 45 minutes to a solution of 5.0 g of 2-methylthio-3-cyano-5-acetylthiophene in 500 ml of methylene chloride. After stirring for another 30 minutes at 5° C., a saturated solution of sodium bicarbonate in approximately 50 ml of water is added; the reaction mixture is then stirred for 60 minutes. The organic layer is separated, washed with water and dried. After distilling off the solvent, the desired product is obtained in a yield of 4.6 g; melting-point 150° C.

Provenance & Evidence