TWO TYPES OF PRODUCTS IN THE REACTIONS OF 2-PYRIDINESULFENYL HALIDES WITH CYCLOALKENES AND CYCLOALKADIENES: SYNTHESIS OF NOVEL [1,3]THIAZOLO[3,2-a]PYRIDINIUM DERIVATIVES

Abstract

The reactions of 2-pyridinesulfenyl halides with cyclopentene, 1,4-cyclohexadiene, 1,5-cyclooctadiene, 1,3-cyclooctadiene, and norbornene, depending on the structure of the alkene, the nature of the halogen, and the duration of the process, lead to the formation of two types of adducts, electrophilic addition products or condensed compounds, [1,3]thiazolo[3,2-a]pyridinium derivatives, in high yields.