Preparation and Characterization of Some Pentaarylethyls
The reaction of triphenylmethylsodium with dichlorodiphenylmethane does not give pentaphenylethyl as previously reported, but when the anion reacts with 9,9-dichlorofluorene, it does form the reported 9-tritylfluorenyl radical which has been characterized by ESR spectroscopy.The radical is better prepared by oxidation of the anion of 9-tritylfluorene.The 9-tritylfluorenyl radical reacts with traces of oxygen to give triphenylmethyl and fluorenone.With light it forms triphenylmethyl and fluorenylidene.The latter was established by photolyzing 9-diazofluorene in the presence of triphenylmethyl with the generation of 9-tritylfluorenyl.Small yields of the persistent pentakis(p-tert-butylphenyl)ethyl radical have been prepared, and it is propable that pentaphenylethyl has also.
Smith, William B.,Harris, Michael C.
p. 4957 - 4962
(2007/10/02)
PHOTOINDUCED ELECTRON TRANSFER FROM TRIPHENYLMETHYL ANION OR TRIPHENYLSILYL ANION TO p-TERPHENYL
The steady illumination of triphenylsilyl anion and p-terphenyl (p-TP) in tetrahydrofuran yielded the radical anion of p-terphenyl (p-TP.-), which persisted after cutting of the light.When the triphenylmethylanion was used, p-TP.- wa
Ito, Osamu,Aruga, Tamotsu,Matsuda, Minoru
p. 2259 - 2264
(2007/10/02)
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