Cycloaddition of di(2-pyridyl) ditelluride to norbornene stimulated by antimony pentachloride

摘要

The interaction of norbornene with the di(2-pyridyl) ditelluride-antimony pentachloride system in methylene chloride proceeds with the formation of exo-9-telluro-3-azoniatetracyclo-[9.2.1.0~(2.10).0~(3,8)] tetradeca-3(8),4,6-triene chloroantimonates(III), which are the products of polar cycloaddition of tellurium-containing electrophiles at the multiple bond. The structure of the heterocyclization products was established by X-ray structural analysis.