Chem. J. Chinese Universities ›› 1992, Vol. 13 ›› Issue (2): 209.

• Articles • Previous Articles     Next Articles

AlkyI Perfluoroacyloxyl Nitroxides ——EPR Studies on SET Reactions Between Perfluorodiacyl Peroxides and Aliphatic Amines

ZHAO Cheng-xue, QU Yan-ling, PENG Yi-yuan   

  1. Department of Chemistry, Huazhong University of Science and Technology, Wuhan, 430074
  • Received:1991-03-27 Online:1992-02-24 Published:1992-02-24

Abstract: Perfluorodiacyl peroxides, (RFCO2)2[R2= n-C3F7, n-C7F15 and H(CF2)4], oxidize secondary aliphatic amines into bis-alkyl nitroxides, RN (O·)R, which are stable in F113 (CClF2-CCl2F) solutions at roon temperatureIn one-electron oxidation reactions of the primary amines, RNH2(R = primary, secondary, as well as tertiary, such as t-butyl) with (RFCO2)2 under the similar conditions, alkyl perfluoroacyloxyl nitroxides RN(O·)OCORF, are always formed and detected by EPRIn the case of t-butyl amine, four more nitroxides of quite different life times, RN(O·)R, RN(O·)H, RN(O·)RFand RN(O·)RF′(RF′=RF-CF2), are observedOur EPRand product studies have revealed the dependence of the reaction patterns on the nature of the Rgroups, of the one-electron oxidation of the primary amines.

Key words: Perfluorodiacyl peroxides, Aliphatic amines, Single electron transfer (SET), EPR, Alkyl perfluoroacyloxyl nitroxides

TrendMD: