Synthesis of 1-Thia-5,7-Diazacyclopenta[cd]- Phenalenes from 6(7)-Derivatives of Perimidine
Electrochemical oxidation of 6(7)-benzoylperimidines was shown to involve two stages of single electron transfer. Based on cyclic voltammetry and microelectrolysis data, a synthetic method was developed for the peri annelation of thiophene ring to benzoyl derivatives of perimidine. A new method was proposed for the preparation of 1-thia-5,7-diazacyclopenta[cd]phenalenes by fusing 6(7)-carbonyl derivatives of perimidine with elemental sulfur.