Methyl p-toluenesulfonate → Benzothiazolium, 3-methyl-2-(methylthio)-, 4-methylbenzenesulfonate (1:1)

Participants

Reaction Steps

A mixture of 6-nitro-2-(methylthio)benzothiazole 7 (0.5 g, 2.2 mmol) and methyl-p-toluenesulfonate (3.7 g, 20 mmol) was heated from 120° C. to 145° C. over one hour. To the cooled solution was added 30 mL of ether. The resulting amorphous solid was triturated with acetone to provide a pale mauve solid (0.57 g, 1.4 mmol, 63%).

Provenance & Evidence