78048-03-0Relevant academic research and scientific papers
Improved method for the synthesis of pentaphenylcyclopentadiene
Dyumaev, V. K.,Davydov, D. V.,Beletskaya, I. P.
, p. 571 - 573 (2007/10/02)
An improved method for the synthesis of pentaphenylcyclopentadiene is suggested.It involves the reaction of tetraphenylcyclopentadienone with PhMgBr and subsequent treatment of the reaction mixture with an excess of LiAlH4 in THF.The effect of arylating agents and reducing agents on the yield of the target product is studied.The method suggested can be used for synthesizing other polyaromatic cyclopentadienes, in particular, 1,2,5-triphenyl-3,4-(1,8-naphthylene)cyclopentadiene.
Syntheses and Properties of 7,9-Diphenyl- and 7,8,9-Triphenylcyclopentacenaphthylenide Ions
Komatsu, Koichi,Fujiura, Ryuji,Okamoto, Kunio
, p. 265 - 268 (2007/10/02)
The 7,9-diphenyl- (3) and 7,8,9-triphenylcyclopentacenaphthylenide ions (2) have been prepared and fully characterized in comparison with the pentaphenylcyclopentadienide ion (1).The anions 2 and 3 are nearly 1 pK unit more stabilized and about 0.05 V more readily oxidized than the anion 1.Whereas the one-electron oxidation of 2 affords the persisting radical, the oxidation of 3 gives the dimeric compound quantitatively.
Pyrolysis of 8-diazo-7,9-diphenylcyclopent(A)acenaphthylene
Balasubramanian,Narasimhan
, p. 685 - 688 (2007/10/02)
Pyrolysis of the title compound in benzene is described.
