The intermediacy of a 3-ketone was excluded by the lack of radioactivity in the ketones corresponding to 4 and 7 added as carriers and reisolated. (7) P. Bouvler, Thése 3e Cycle, Unlverslte Louis Pasteur, 1974. (8) We thank the CNRS (RCP No. 282, LA No. 31 and ERA No. 487) for support and Professor P. Benveniste for the provision of facilities and helpful discussions.
Contrary to a previous report that Birch reduction of c 6 0 affords C60H36 as the principal product, laser desorption-laser photoionisation time-of-flight (LZTOF), laser desorption Fourier transform io'n cyclotron resonance (FTICR), and liquid secondary ion mass spectrometry (LSIMS) show collectively that a mixture of polyhydrofullerenes, containing &OH18 through to C60H36 with a skewed distribution centred on C60H32 is formed, the discrepancy in results arising from the thermal lability of this mixture of polyhydrofullerenes when subjected to the elevated temperatures (>250 "C) required for mass spectroscopic studies using direct-insertion heated probes.
Thermal elimination of isobutene and C 0 2 from N-tert-butoxycarbonylaziridino[2',3': 1,21[60lfullerene 4 provides a clean and efficient route to aziridino[2',3': 1,21[60lfullerene 1, an isolable and stable solid.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.