Crystalline Cyclic (Alkyl)(amino)carbene-tetrafluoropyridyl Radical.
Chemistry
; 21(23): 8441-6, 2015 Jun 01.
Article
en En
| MEDLINE
| ID: mdl-25925367
ABSTRACT
A stable cyclic (alkyl)(amino)carbene (CAAC) 1 inserts into the para-CF bond of pentafluoropyridine, and after fluoride abstraction, the iminium-pyridyl adduct [3](+) was isolated. A cyclic voltammetry study shows a reversible three-state redox system involving [3](+) , [3](â
) , and [3](-) . The CAAC-pyridyl radical [3](â
) , obtained by reduction of [3](+) with magnesium, has been spectroscopically and crystallographically characterized. In contrast to the lack of π communication between the CAAC and the pyridine units in cation [3](+) , the unpaired electron of [3](â
) is delocalized over an extended π system involving both heterocycles.
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Bases de datos:
MEDLINE
Idioma:
En
Revista:
Chemistry
Asunto de la revista:
QUIMICA
Año:
2015
Tipo del documento:
Article