Synthesis and Redox Properties of Pyrrole- and Azulene-Fused Azacoronene.
Org Lett
; 21(6): 1900-1903, 2019 03 15.
Article
in En
| MEDLINE
| ID: mdl-30835482
ABSTRACT
Synthesis of an azacoronene, in which both pyrrole and azulene moieties are circularly fused, was achieved just in three steps. This new azacoronene exhibited multistep reversible oxidations under electrochemical and chemical conditions. Formation of an aromatic 22π-electron conjugation and a tropylium cation (6π-electron conjugation) in the dicationic state was revealed by the single-crystal X-ray crystallographic analysis as well as the nucleus-independent chemical shift (NICS) and anisotropy of the induced current density (ACID) calculations.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Org Lett
Year:
2019
Document type:
Article