The tuning of heterocyclic isomerization: Additional routes to extended donors

Tetrathianaphthalene: A precursor easily synthesized in bulk, is utilized i n: the synthesis of tetrathiafulvalene, and extended chalcogenated tetrathi anaphthalenes and tetrathiafulvalenes. The donor syntheses dependant upon c ore heterocycle configuration retention or isomerization are controlled via the use of novel solvent systems and new classes of disulfide building blo cks.