Amines sulfamic acid halides

X0 compounds 17, 251 phenol acetates 17, 248 sulfamic acid halides 16, 563 sulfamides 17, 353 thioacylamines 16, 468 thiocyanamides 16, 365 J2-i,2,3-triazolines 17, 391 tris(aminomethyl)amines... 

In sulfamation, also termed IV-sulfonation, compounds of the general structure I NSC H are formed as well as their corresponding salts, acid halides, and esters. The reagents are sulfamic acid (amido—sulfuric acid), SO3—pyridine complex, S03—tertiary amine complexes, aliphatic amine—S03 adducts, and chlorine isocyanate—S03 complexes (3). 

Dehydrations using chlorosulfonic acid-pyridine (pyridinium sulfamates) provide a convenient synthetic route to amides without die intermediacy of acyl halides. The carboxylic acid was condensed with the amine in pyridine solution containing chlorosulfonic acid at 0-10 °C to give the amides (Equations 9 and 10).2 ... 

---