Reaction #2122520

Reaction equation

Compound 24

N,N,2-trimethylbenzo[d]thiazole-6-sulfonamide

p-toluenesulfonic acid methyl ester

→

Compound 25

Yield 84.0%

6-(N,N-dimethylsulfamoyl)-2,3-dimethylbenzo[d]thiazole-3-ium tosylate

Yield 84.0%

Conditions

Workup

1. 1
   Temperatureto cool to room temperature
2. 2
   Otherthe resulting mass was triturated with ethyl acetate (25 ml) until an off-white solid
3. 3
   Otherseparated
4. 4
   OtherThe solid was collected by centrifugation
5. 5
   Washwashed with ethyl acetate
6. 6
   Otherdried under vacuum

Procedure

A mixture of Compound 24 (2.0 g, 7.8 mmol) and p-toluenesulfonic acid methyl ester (2.2 g, 11.7 mmol) was heated in a pressure tube at 130° C. for 2 hours. The mixture was allowed to cool to room temperature, and the resulting mass was triturated with ethyl acetate (25 ml) until an off-white solid separated. The solid was collected by centrifugation, washed with ethyl acetate and dried under vacuum to yield 2.9 g (84%) of Compound 25 whose structure is given below:

Source