3-Sulfamyl-4-chloro-benzoyl chloride

Sulfamyl-4-chloro-benzoyl chloride N-Amino-2-methyl indoline... 

A total of 8.9 parts of 3-sulfamyl-4-chloro-benzoyl chloride In a solution of 50 parts of anhydrous tetrahydrofuran are added portionwise in the course of 60 minutes, while stirring, to a solution of 5.2 parts of N-amino-2-methyl indoline and 3.5 parts of triethylamine in 150 parts of anhydrous tetrahydrofuran. The reaction mixture is left to stand 3 hours at room temperature, then the precipitated chlorhydrate of triethylamine is filtered off. 

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