Nitroxide-induced beta-hydrogen atom abstraction and beta-elimination of rhodium porphyrin alkyls have been observed. Rhodium(II) porphyrin radical were proposed intermediates to form first and subsequently reacted via aliphatic carbon–carbon bond activation with alkyl substituted nitroxides to yield rhodium porphyrin alkyl complexes.
Structure of the Modified Heme in Allylbenzene-Inactivated Chloroperoxidase Determined by Q-Band CW and Pulsed ENDOR
作者:Hong-In Lee、Annette F. Dexter、Yang-Cheng Fann、Frederick J. Lakner、Lowell P. Hager、Brian M. Hoffman
DOI:10.1021/ja963684c
日期:1997.4.1
orientation of the g tensor relative to the heme. C-13 ENDOR of allylbenzene-inactivated CPO with C-13-labeled allylbenzene shows that the C-1 and C-2 carbons of allylbenzene are covalently connected to the hemesystem. H-1,H-2 ENDOR plus mass analysis of CPO heme after inactivation with deuterated allylbenzene show that all three vinylic protons are retained in the heme adduct. No strongly-coupled exchangeable
Direct evidence for the existence and the relative stability of gaseous ethylenebenzenium ions from a carbon-13 labeling study
作者:Simonetta Fornarini、Vincenzo Muraglia
DOI:10.1021/ja00185a014
日期:1989.2
Direct evidence is reported for the existence of unsubstituted ethylenebenzenium ions in the gas phase, based on sup 13}C-labeling of a methylene position in the precursor beta}-phenylethyl alcohol or chloride. The sup 13}C location in the products of the substitutionreaction induced by gaseous cations in the presence of methanol is consistent with the occurrence of ethylenebenzenium ions3 which