In the presence of micromolar peroxides or biometals (Fe(III)???, Cu(II)???, V(V) salts)???, and following a strong acid input, the stable 3-???phenyl-???2H-???1,???4-???benzothiazine is efficiently converted to a green-???blue ??2,???2'-???bi(2H-???1,???4-???benzothiazine) chromophore via dehydrogenative coupling of a 1,???4-???benzothiazinyl radical. The new system is of potential practical interest for colorimetric peroxide and redox biometal detection.
Red-Hair-Inspired Chromogenic System Based on a Proton-Switched Dehydrogenative Free-Radical Coupling / Leone, Loredana; Crescenzi, Orlando; Amorati, R.; Valgimigli, L.; Napolitano, Alessandra; Barone, V.; D'Ischia, Marco. - In: ORGANIC LETTERS. - ISSN 1523-7060. - 15:19(2013), pp. 4944-4947. [10.1021/ol402161j]
Red-Hair-Inspired Chromogenic System Based on a Proton-Switched Dehydrogenative Free-Radical Coupling
LEONE, LOREDANA;CRESCENZI, ORLANDO;NAPOLITANO, ALESSANDRA;D'ISCHIA, MARCO
2013
Abstract
In the presence of micromolar peroxides or biometals (Fe(III)???, Cu(II)???, V(V) salts)???, and following a strong acid input, the stable 3-???phenyl-???2H-???1,???4-???benzothiazine is efficiently converted to a green-???blue ??2,???2'-???bi(2H-???1,???4-???benzothiazine) chromophore via dehydrogenative coupling of a 1,???4-???benzothiazinyl radical. The new system is of potential practical interest for colorimetric peroxide and redox biometal detection.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
