Mass Spectrometry Studies of the Retro-Cycloaddition Reaction of Pyrrolidino and 2-Pyrazolinofullerene Derivatives Under Negative ESI Conditions |
| |
Authors: | Juan Luis Delgado Salvatore Filippone Angel Martín-Domenech Margarita Altable Enrique Maroto Fernando Langa Nazario Martín Roberto Martínez-Alvarez |
| |
Institution: | IMDEA-Nanociencia, Facultad de Ciencias, Módulo C-IX, 3a planta, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain. |
| |
Abstract: | Substituted pyrrolidino- and 3-alkyl-2-pyrazolinofullerenes ionize under ESI and MALDI mass spectrometry conditions and negative
mode of detection undergoing mass spectral fragmentations, which can be easily correlated with the reported results for the
thermal and electrochemical retro-cycloaddition reactions of these compounds. 2-Pyrazolinofullerenes lead directly to a 60]fullerene
product ion formed through a retro-cycloaddition process regardless of the substituents attached at the carbon and nitrogen
atoms of the heterocyclic ring. These results are different from whose reported for the thermal and electrochemical processes.
In contrast, pyrrolidinofullerenes undergo different fragmentative reactions depending upon the substituents (hydrogen, alkyl,
or acyl) attached at the nitrogen atom of the heterocyclic ring leading eventually to the pristine C60 in the last step of the fragmentation pathway. |
| |
Keywords: | |
本文献已被 PubMed SpringerLink 等数据库收录! |
|