[faust]

well may be my TsCl is a bad one... Because I have of pot of like... 3kg from acros!

And they said (in the article) that you can extract MeOOC---NHTs, the sulfonamide couldn't be protonated, so it's soluble in organic medium.

well tomorow i'll try the Schauten Bauman reaction... I hope it will give results this time