(benzо)imidazo[2, 1-b][1, 3]thiazinеs

Features of (Benzo)Imidazo[2,1-b][1,3]thiazine Mezylates Reaction with Nucleophilic Reagents

Peculiarities of the course of the methanesulfo-derivatives of (benzo)imidazo[2,1-b][1,3]thiazines reac-tions with a number of nucleophilic reagents were studied. It was determined that they react nonselectively with potassium thiocyanate to form a mixture of thio- and isothiocyanate derivatives. When interacting with sodium azide, nucleophilic substitution competes with an elimination reaction. The latter is dominant in the reaction with sodium cyanide.