23934-48-7Relevant academic research and scientific papers
Selective Preparation of C 2v -Symmetric Hexaphenylbenzene Derivatives through Sequential Suzuki Coupling
Ogata, Kazuho,Kojima, Tatsuo,Hiraoka, Shuichi
, p. 1597 - 1600 (2018)
We have developed effective reaction conditions for the Suzuki cross-coupling of chlorinated hexaphenylbenzene derivatives. A chloro group on a hexaphenylbenzene framework exhibits a low reactivity to Suzuki cross-coupling, and only nickel catalysts bearing alkyl-substituted phosphine ligands achieved the coupling. With this as a key step, we succeeded in the selective preparation of a C 2v -symmetric hexaphenylbenzene derivative containing two kinds of aryl group.
Synthesis of Some New Polynuclear Compounds by Cycloaddition Reaction
Samanta, S. R.,Mukherjee, A. K.
, p. 26 - 29 (2007/10/02)
A large number of 7,9-disubstituted derivatives (I) of cyclopentacenaphthylene-8(H)-one and 2,5-disubstituted derivatives (II) of 3,4-diphenylcyclopentadienone have been synthesized by condensing acenaphthaquinone and benzil separately with suitable 1,3-disubstituted propan-2-ones.The 3-(o- and p-methoxytolyl)cyclopentadienones (IX) have been synthesized by Friedel-Crafts reaction of appropriate methyl cresyl ethers and phenacyl chloride.These dienones have been subjected to Diels-Alder reaction with acenaphthylene and a new acetylenic dienophile (V) (whose synthesis is also described in this paper) to yield a large number of polynuclear aromatic compounds having fluoranthene and p-quaterphenyl nuclei, which have been finally characterised by elemental analyses, IR and PMR spectral data.
