19821-80-8Relevant articles and documents
Synthesis of Triply Fused Porphyrin-Nanographene Conjugates
Chen, Qiang,Brambilla, Luigi,Daukiya, Lakshya,Mali, Kunal S.,De Feyter, Steven,Tommasini, Matteo,Müllen, Klaus,Narita, Akimitsu
, p. 11233 - 11237 (2018)
Two unprecedented porphyrin fused nanographene molecules, 1 and 2, have been synthesized by the Scholl reaction from tailor-made precursors based on benzo[m]tetraphene-substituted porphyrins. The chemical structures were validated by a combination of high
Synthesis and Physical Properties of Strained Doubly Phosphorus-Bridged Biaryls and Viologens
Greulich, Tobias W.,Yamaguchi, Eriko,Doerenkamp, Carsten,Lübbesmeyer, Maximilian,Daniliuc, Constantin G.,Fukazawa, Aiko,Eckert, Hellmut,Yamaguchi, Shigehiro,Studer, Armido
, p. 6029 - 6033 (2017)
New P/N-containing π-electron systems comprising fully planar biaryl arrays are synthesized by multiple radical phosphanylation. The biaryl moiety in these highly strained planar π-systems is rigidified by double P-bridging. The electronic properties of the core biaryl entity are varied by introducing N-donor substituents or by installing N-atoms within the π-system, thereby moving to the viologen core structure. The electrochemical and photophysical properties of these compounds are discussed and compared with those of related systems.
The "Aryne" route to biaryls featuring uncommon substituent patterns
Leroux, Frederic,Schlosser, Manfred
, p. 4272 - 4274 (2002)
1,2-Didehydroarenes ("arynes") mediate as extremely reactive, short-lived intermediates in selective aryl-aryl coupling processes to form biaryls with unprecedented substituent patterns (see scheme, X = H, F, Cl). Possible applications include the synthesis of novel ligands for asymmetric catalysis.
Synthetic method for optically pure double-helix oligomeric tetra-benzocyclooctene substances
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Paragraph 0045; 0046, (2017/07/31)
The invention discloses a synthetic method for optically pure double-helix oligomeric tetra-benzocyclooctene substances. The synthetic method comprises the following steps: (1) carrying out oxidative cross-coupling on diiodo dimethoxy biphenyl (51) and 2,2',6,6'-biphenyl tetrabromide (97) to obtain 1,16-dibromo-8,9-dimethoxy tetra-benzocyclooctene (96); (2) splitting the compound (96), thus obtaining optically pure (S, S)-96 and (R, R)-96; (3) taking the compound (96) as a raw material, synthesizing an intermediate (116) containing 6 benzene rings; (4) splitting the intermediate (116) to obtain (M)-116 and (P)-116; (5) making the optically pure (S, S)-96 and (M)-116 reacted to obtain target products, namely (M) -117, (M)-149 and (M)-150; and/or: making the (R, R)-96 and (P)-116 reacted to obtain target products, namely (P)-117, (P)-149 and (P)-150.