A new route to dithiadiazafulvalene derivatives from mesoionic thiazoles. Formation of a ten-membered macrocycle by oxidation with oxygen and in situ generation of a charge transfer complex with tetracyanoquinodimethane

Abstract

Mescionic thiazoles are starting materials for the preparation of oxygen sensitive dithiadiazafulvalenes, which can be reacted in situ with acceptor derivatives to give the corresponding charge transfer complexes while their reaction with oxygen leads to a ten-membered macrocycle.