610784-79-7Relevant articles and documents
Syntheses and structure study on 3,3aλ 4,4-trithia-1-azapentalenes and their 3-oxa analogues
Cmelik, Richard,Cajan, Michal,Marek, Jaromir,Pazdera, Pavel
, p. 1243 - 1263 (2007/10/03)
Reactions of nitrile, amide or ester of 5-amino-3-thioxo-3H-1,2-dithiole-4-carboxylic acid 1 with alkylation and acylation agents were studied. "Ionic" 1,2-dithiole amides 6 were formed in several ways. Treatment with phosphorus pentasulfide afforded the corresponding 3,3aλ4,4-trithia-1-azapentalenes 7. Structures of the synthesized heterocycles were studied using a combination of X-ray analysis, IR spectroscopy, and HF and DFT quantum-chemical calculations.