50423-48-8Relevant academic research and scientific papers
Ligand-Field Energy Splitting in Lanthanide-Based Single-Molecule Magnets by NMR Spectroscopy
Hiller, Markus,Krieg, Saskia,Ishikawa, Naoto,Enders, Markus
, p. 15285 - 15294 (2017)
A method for the experimental determination of ligand-field (LF) energy splitting in mononuclear lanthanide complexes, based purely on variable-temperature NMR spectroscopy, was developed. The application of this method in an isostructural series of anion
Preparation of Structurally and Electronically Diverse N → B-Ladder Boranes by [2 + 2 + 2] Cycloaddition
Schepper, Jonas D. W.,Orthaber, Andreas,Pammer, Frank
, p. 14767 - 14776 (2021/10/25)
We report the synthesis of a series of eight N → B-ladder boranes through cobalt-mediated cyclotrimerization of (2-cyanophenyl)-dimesitylborane with different dialkynes. The resulting tetracoordinate boranes show variable electrochemical and optical prope
2,3-Dihalo- and 2,3,6,7-Tetrahaloanthracenes by Vollhardt Trimerization
Hoffmann, Hendrik,Mukanov, Diana,Ganschow, Michael,Rominger, Frank,Freudenberg, Jan,Bunz, Uwe H. F.
, p. 9826 - 9834 (2019/08/20)
We efficiently synthesized otherwise difficult to obtain 2,3- and 2,3,6,7-halogenated anthracenes with diverse east/west substituents. Key steps involve the (i) Vollhardt cyclization of bis(propargyl)benzenes with bis(trimethylsilyl)acetylene, (ii) halo-desilylation introducing chlorine, bromine, or iodine substituents, and (iii) dehydrogenation. Pd catalysis allows selective functionalization at the anthracenes' east/west positions. A tetrahydropentacene is synthesized and derivatized via the same strategy, employing tetrapropargylbenzene.
Rhodium dinaphthocyclooctatetraene complexes: Synthesis, characterization and catalytic activity in [5+2] cycloadditions
Wender, Paul A.,Lesser, Adam B.,Sirois, Lauren E.
supporting information; experimental part, p. 2736 - 2740 (2012/04/23)
Rh COT in the act: A Ni0-catalyzed [2+2+2+2] cycloaddition provides a high-yielding, scalable synthesis of the ligand dinaphtho[a,e] cyclooctatetraene (dnCOT). dnCOT complexation with RhI gives [Rh(dnCOT)(MeCN)2]SbF6
Homologation method for preparation of substituted pentacenes and naphthacenes
Takahashi, Tamotsu,Li, Shi,Huang, Wenying,Kong, Fanzhi,Nakajima, Kiyohiko,Shen, Baojian,Ohe, Takahiro,Kanno, Ken-Ichiro
, p. 7967 - 7977 (2007/10/03)
Multi-substituted pentacenes, such as 1,2,3,4,6,8,9,10,11,13- decasubstituted pentacenes (Type I), 1,2,3,4,6,-13-hexasubstituted pentacenes (Type II), 1,2,3,4-tetrasubstituted pentacenes (Type III), and 2,3-disubstituted pentacenes (Type IV), 1,2,3,4,6,11
254. Synthesis of Cyclopropanthracenes via Trapping of o-Naphthoquinodimethane
Muller, Paul,Rodriguez, Domingo
, p. 2540 - 2542 (2007/10/02)
Cyclopropanthracenes 1, 1a, 1b are prepared in a 3-step synthesis starting from o-di(iodomethyl)benzene.The key step consists of trapping of o-naphthoquinodimethane (9) with 1,2-di- and tetrahalogenocyclopropenes (3, 3a, 4b).
