58358-55-7Relevant academic research and scientific papers
Polyaniline-anchored palladium catalyst-mediated Mizoroki-Heck and Suzuki-Miyauraa reactions and one-pot Wittig-Heck and Wittig-Suzuki reactions
Patel, Heta A.,Patel, Arun L.,Bedekar, Ashutosh V.
, p. 1 - 6 (2015/01/30)
A polyaniline-anchored palladium catalyst was prepared and screened for coupling reactions of aryl halides. The robust and recyclable catalyst was effective in Mizoroki-Heck and Suzuki-Miyaura reactions of aryl bromides and aryl iodides. The catalyst system was further employed for one-pot Wittig-Heck and Wittig-Suzuki combinations to build conjugated compounds in good conversions.
Gold(I) styrylbenzene, distyrylbenzene, and distyrylnaphthalene complexes: High emission quantum yields at room temperature
Gao, Lei,Niedzwiecki, Daniel S.,Deligonul, Nihal,Zeller, Matthias,Hunter, Allen D.,Gray, Thomas G.
scheme or table, p. 6316 - 6327 (2012/06/30)
One gold(I)-substituted styrylbenzene, six digold(I) distyrylbenzenes, one tetragold distyrylbenzene, and four digold distyrylnaphthalene complexes were synthesized using base-promoted auration, alkynylation, triazolate formation, and Horner-Wadsworth-Emmons reactions. The gold(I) fragments are either σ-bonded to the aromatic system, or they are attached through an alkynyl or triazolate spacer. Product formation was monitored using 31P{ 1H} NMR spectroscopy. Systems in which gold(I) binds to the central benzene ring or the terminal phenyl rings were designed. All of these complexes have strong ultraviolet absorptions and emit blue light. The position of the gold(I) attachment influences the luminescence efficiency. Complexes with two gold(I) fragments attached to the ends of the conjugated system have fluorescence quantum yields up to 0.94, when using 7-diethylamino-4- methylcoumarin as the emission standard. Density-functional theory calculations on three high-yielding emitters suggest that luminescence originates from the distyrylbenzene or -naphthalene bridge. Copyright
A convenient one-pot synthesis of bis[(E)-4-halostyryl]arene derivatives
Prukala, Wieslaw,Majchrzak, Mariusz,Posala, Krystian,Marciniec, Bogdan
experimental part, p. 3047 - 3052 (2009/04/06)
A new convenient synthetic protocol for the one-pot stereoselective synthesis of bis[(E)-4-bromo(or chloro)styryl]arene derivatives via the sequential reaction of silylative-coupling of 4-halostyrenes with vinylsilanes followed by palladium-catalyzed cross-coupling 4-halostyrylsilanes with diiodoarenes, is described. The reaction leads to symmetrical bis[(E)-4-halostyryl]arene derivatives obtained in a stereocontrolled manner with high efficiency. Georg Thieme Verlag Stuttgart.
Palladium-catalyzed stereoselective synthesis of (E)-stilbenes via organozinc reagents and carbonyl compounds
Wang, Jin-Xian,Wang, Kehu,Zhao, Lianbiao,Li, Hongxia,Fu, Ying,Hu, Yulai
, p. 1262 - 1270 (2007/10/03)
In the presence of a catalytic amount of PdCl2(PPh 3)2 and a silylating agent, organozinc halides reacted with carbonyl compounds to give the corresponding (E)-stilbenes in good to excellent yields under mild conditions. The reaction mechanism is briefly discussed.
Intervalence transitions in the mixed-valence monocations of bis(triarylamines) linked with vinylene and phenylene-vinylene bridges
Barlow, Stephen,Risko, Chad,Chung, Sung-Jae,Tucker, Neil M.,Coropceanu, Veaceslav,Jones, Simon C.,Levi, Zerubba,Bredas, Jean-Luc,Marder, Seth R.
, p. 16900 - 16911 (2007/10/03)
(E)-4,4′-Bis{bis(4-methoxyphenyl)amino}stilbene, 1, (E,E)-1,4-bis[4-{bis(4-methoxyphenyl)-amino}styryl]benzene, 2, and two longer homologues, (E,E,E)-4,4′-bis[4-{bis(4-methoxyphenyl)amino}-styryl] stilbene, 3, and (E,E,E,E)-1,4-bis(4-[4-{bis(4-methoxyphen
Design of ??-conjugated organic materials for one-dimensional energy transport in nanochannels
Sancho-Garciì?a, Juan Carlos,Breì?das, Jean-Luc,Beljonne, David,Cornil, Jeì?roì?me,Martiì?nez-Aì?lvarez, Roberto,Hanack, Michael,Poulsen, Lars,Gierschner, Johannes,Mack, Hans-Georg,Egelhaaf, Hans-Joachim,Oelkrug, Dieter
, p. 4872 - 4880 (2008/03/14)
Various end-substituted distyrylbenzenes have been synthesized to serve as guest molecules in inclusion compounds to promote efficient energy transport along one-dimensional channels. Their optical and photophysical properties have been characterized at b
Triaryl boron-based A-π-A vs triaryl nitrogen-based D-π-D quadrupolar compounds for single- and two-photon excited fluorescence
Liu, Zhi-Qiang,Fang, Qi,Cao, Du-Xia,Wang, Dong,Xu, Gui-Bao
, p. 2933 - 2936 (2007/10/03)
(Equation Presented) Three new A-π-A-type compounds with trivalent boron, protected by two mesityl groups, as electron acceptor have been synthesized and investigated together with their two diphenylamino-ended D-π-D analogues. These boranes exhibit large two-photon absorption cross sections and high fluorescence quantum yields.
Synthesis, layer assembly, and fluorescence dynamics of poly(phenylenevinylene) oligomer phosphonates
Katz,Bent,Wilson, William L.,Schilling,Ungashe, Solomon B.
, p. 6631 - 6635 (2007/10/02)
We report the synthesis and spectroscopic study of a new molecularly engineered multilayer structure. The chromophore, which is an oligomer of poly(p-phenylenevinylene), is analogous to polymeric PPV which has been used in the fabrication of LEDs. This st
Synthesis and Absorption/Emission Spectral Properties of Styrylstilbene and Distyrylanthracene Derivatives
Nakatsuji, Shin'ichi,Matsuda, Kosei,Uesugi, Yukiko,Nakashima, Kenichiro,Akiyama, Shuzo,et al.
, p. 861 - 867 (2007/10/02)
A series of para-substituted styrylstilbenes I and 9,10-distyrylanthracenes II was synthesized by Wittig or Arbusov-Horner reaction as a key step.Subsequently, systematic investigations were carried out on their absorption and fluorescence spectra, and th
