ESR STUDY OF NITROXIDE RADICALS GENERATED FROM TRIAZ-2-EN-1-OLS

Authors
OMELKA L VRABEL I ERENTOVA K DAUTH J DEUBZER B WEIS J
Citation
L. Omelka et al., ESR STUDY OF NITROXIDE RADICALS GENERATED FROM TRIAZ-2-EN-1-OLS, Helvetica Chimica Acta, 79(3), 1996, pp. 663-669
Citations number
15
Categorie Soggetti
Chemistry
Journal title
Helvetica Chimica Acta → ACNP
ISSN journal
0018019X
Volume
79
Issue
3
Year of publication
1996
Pages
663 - 669
Database
ISI
SICI code
0018-019X(1996)79:3<663:ESONRG>2.0.ZU;2-5
Abstract
The triazenols 4-R(1)-C6H4-N=N-N(OH)-R(2) (1), oxidized with t-BuO(2)( .) radicals, produced nitroxide radicals R(1)-C6H4-N(O-.)-N=N(R(2))O-(-) (5). The suggested radical structure was confirmed by N-15-labelin g. The reaction of triazenols 1 with PbO2 proceeded under N-2 eliminat ion, in which case nitroxides R(1)-C6H4-N(R(2))-O-. (2) were observed as the final radical products. The intermediate R(1)-C6H4. radicals we re identified by spin-trapping.