15638-06-9Relevant articles and documents
Converting homogeneous to heterogeneous in electrophilic catalysis using monodisperse metal nanoparticles
Witham, Cole A.,Huang, Wenyu,Tsung, Chia-Kuang,Kuhn, John N.,Somorjai, Gabor A.,Toste, F. Dean
, p. 36 - 41 (2010)
A continuing goal in catalysis is to unite the advantages of homogeneous and heterogeneous catalytic processes. To this end, nanoparticles represent a new frontier in heterogeneous catalysis, where this unification can also be supplemented by the ability
Method for synthesizing phenanthrene and derivatives thereof
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Paragraph 0072-0083, (2019/03/26)
The present invention provides a method for synthesizing phenanthrene and derivatives thereof represented by a formula (III) or (IV). The method is characterized in that a substituted 2-phenylcinnamaldehyde compound represented by a formula (I) or 2-thiophenylcinnamaldehyde represented by a formula (II) is taken as an initial substance, under the effect of a silver catalyst, an oxidant, a basic substance and a solvent, a reaction is carried out at 60 DEG C-100 DEG C for 12-36 hours, the reaction solution is separated and purification is carried out, so that corresponding phenanthrene and derivatives thereof represented by the formula (III) or (IV) are obtained. The synthesis method of the invention has the characteristics of small environmental hazard, mild reaction conditions, simple operation and the like.
A combined experimental and computational study on the cycloisomerization of 2-ethynylbiaryls catalyzed by dicationic arene ruthenium complexes
Yamamoto, Yoshihiko,Matsui, Kazuma,Shibuya, Masatoshi
supporting information, p. 7245 - 7255 (2015/05/05)
Ruthenium-catalyzed cycloisomerization of 2-ethynylbiaryls was investigated to identify an optimal ruthenium catalyst system. A combination of [η6-(p-cymene)RuCl2(PR3)] and two equivalents of AgPF6 effectively converted 2-ethynylbiphenyls into phenanthrenes in chlorobenzene at 120 °C over 20 h. Moreover, 2-ethynylheterobiaryls were found to be favorable substrates for this ruthenium catalysis, thus achieving the cycloisomerization of previously unused heterocyclic substrates. Moreover, several control experiments and DFT calculations of model complexes were performed to propose a plausible reaction mechanism.