Functionalization vs. degradation of 1,4-polybutadiene by ruthenium complex catalyzed reaction with vinylsilanes

2001 ◽  
Vol 79 (5-6) ◽  
pp. 775-779 ◽  
Author(s):  
Bogdan Marciniec ◽  
Ewa Malecka ◽  
Jacek Gulinski ◽  
Monika Grundwald-Wyspianska ◽  
Mariusz Lewandowski
Keyword(s):  
Ruthenium Complex ◽  
Ruthenium Complexes ◽  
Ruthenium Catalysts ◽  
Cross Metathesis ◽  
Higher Temperature ◽  
Partial Degradation

Polybutadiene (I) containing 91% of 1,4-(cis-trans) units and 9% of 1,2-units in the presence of vinyltriethoxysilane (II) and ruthenium catalysts RuCl2(PPh3)3 (III), RuHCl(CO)(PPh3)3 (IV), and [RuCl2(CO)3]2 (V) at 100-130°C undergoes functionalization and (or) partial degradation as an effect of competitive silylative coupling of =C-H and cross-metathesis of I with II. Significant degradation of I occurs at lower temperatures (100-110°C) (particularly when the process is carried out in air), but exclusive functionalization of I is observed at higher temperature (120-130°C) regardless of the atmosphere (air or argon) used.Key words: functionalization, degradation, polybutadiene, ruthenium complexes.

A selenium-containing ruthenium complex as a cancer radiosensitizer, rational design and the important role of ROS-mediated signalling

2015 ◽  
Vol 51 (13) ◽  
pp. 2637-2640 ◽  
Author(s):  
Zhiqin Deng ◽  
Lianling Yu ◽  
Wenqiang Cao ◽  
Wenjie Zheng ◽  
Tianfeng Chen
Keyword(s):  
Rational Design ◽  
Ruthenium Complex ◽  
Ruthenium Complexes

We have described the rational design of selenium-containing ruthenium complexes and their use as cancer radiosensitizers through regulating ROS-mediated pathways.

Recent Progress in Polynuclear Ruthenium Complex-Based DNA Binders/Structural Probes and Anticancer Agents

2020 ◽  
Vol 27 (22) ◽  
pp. 3735-3752 ◽  
Author(s):  
Si-Qi Zhang ◽  
Li-Hua Gao ◽  
Hua Zhao ◽  
Ke-Zhi Wang
Keyword(s):  
Anticancer Agents ◽  
Ruthenium Complex ◽  
Ruthenium Complexes ◽  
Anticancer Activities ◽  
Bridging Ligands ◽  
Metal Centers ◽  
Dna Binders ◽  
Structural Probes ◽  
Polynuclear Ruthenium Complexes

Ruthenium complexes have stood out by several mononuclear complexes which have entered into clinical trials, such as imidazolium [trans-RuCl4(1H-imidazole)(DMSO-S)] (NAMI-A) and ([Ru(II)(4,4'-dimethyl-2,2'-bipyridine)2-(2(2'-,2'':5'',2'''-terthiophene)-imidazo[4,5-f] [1,10]phenanthroline)] 2+) (TLD-1433), opening a new avenue for developing promising ruthenium-based anticancer drugs alternative to Cisplatin. Polynuclear ruthenium complexes were reported to exhibit synergistic and/or complementary effects: the enhanced DNA structural recognition and DNA binding as well as in vitro anticancer activities. This review overviews some representative polynuclear ruthenium complexes acting as DNA structural probes, DNA binders and in vitro anticancer agents, which were developed during last decades. These complexes are reviewed according to two main categories of homo-polynuclear and hetero-polynuclear complexes, each of which is further clarified into the metal centers linked by rigid and flexible bridging ligands. The perspective, challenges and future efforts for investigations into these exciting complexes are pointed out or suggested.

scholarly journals Preparation of monocarbonyl ruthenium complexes bearing bidentate nitrogen and phosphine ligands and their catalytic activity in carbonyl compound reduction

2019 ◽  
Vol 48 (33) ◽  
pp. 12560-12576 ◽  
Author(s):  
Steven Giboulot ◽  
Clara Comuzzi ◽  
Alessandro Del Zotto ◽  
Rosario Figliolia ◽  
Giovanna Lippe ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Carbonyl Compound ◽  
Ruthenium Complexes ◽  
Ruthenium Catalysts ◽  
Phosphine Ligands ◽  
Diphosphine Ligands ◽  
Straightforward Approach

A series of novel monocarbonyl ruthenium catalysts containing bidentate dinitrogen or/and diphosphine ligands are easily obtained through a general and straightforward approach.

Terminal conjugated dienes via a ruthenium-catalyzed cross-metathesis/elimination sequence: application to renewable resources

2014 ◽  
Vol 4 (7) ◽  
pp. 2064-2071 ◽  
Author(s):  
Hallouma Bilel ◽  
Naceur Hamdi ◽  
Fethi Zagrouba ◽  
Cédric Fischmeister ◽  
Christian Bruneau
Keyword(s):  
Renewable Resources ◽  
Ruthenium Complexes ◽  
Conjugated Dienes ◽  
Cross Metathesis

Two-step synthesis of terminal 1,3-dienes catalyzed by two different ruthenium complexes.

Improved yne–ene-cross metathesis utilizing a dihydroimidazole carbene ruthenium complex

2000 ◽  
Vol 41 (29) ◽  
pp. 5465-5468 ◽  
Author(s):  
Roland Stragies ◽  
Ulrike Voigtmann ◽  
Siegfried Blechert
Keyword(s):  
Ruthenium Complex ◽  
Cross Metathesis

scholarly journals Modification of Polyhedral Oligomeric Silsesquioxanes (POSS) Molecules by Ruthenium Catalyzed Cross Metathesis

Molecules ◽  
2018 ◽  
Vol 23 (7) ◽  
pp. 1722 ◽  
Author(s):  
Justyna Czaban-Jóźwiak ◽  
Łukasz Woźniak ◽  
Artur Ulikowski ◽  
Katarzyna Kwiecińska ◽  
Adam Rajkiewicz ◽  
...  
Keyword(s):  
Ruthenium Complexes ◽  
Polyhedral Oligomeric Silsesquioxanes ◽  
Ru Catalyst ◽  
Cross Metathesis

The scope of ruthenium (Ru)-catalyzed cross metathesis (CM) of allyl-decorated polyhedral oligomeric silsesquioxanes (POSS) was explored. A variety of different commercial and non-commercial ruthenium complexes were tested to determine that the nitro-activated Ru catalyst is optimal for this transformation. The reported transformation was used to prepare selected hybrid steroid-POSS compounds.

A new designed hydrazine group-containing ruthenium complex used for catalytic hydrogenation of esters

2015 ◽  
Vol 51 (61) ◽  
pp. 12193-12196 ◽  
Author(s):  
Xuefeng Tan ◽  
Qingli Wang ◽  
Yuanhua Liu ◽  
Fangyuan Wang ◽  
Hui Lv ◽  
...  
Keyword(s):  
Catalytic Hydrogenation ◽  
Ruthenium Complex ◽  
Ruthenium Complexes ◽  
Excellent Performance

Hydrazine group-containing nitrogen–phosphine ruthenium complexes were synthesized and used for hydrogenation of esters, and excellent performance was observed (TON up to 17 200).

Tandem Catalytic Acrylonitrile Cross-Metathesis and Hydrogenation of Nitriles with Ruthenium Catalysts: Direct Access to Linear α,ω-Aminoesters from Renewables

ChemSusChem ◽  
2012 ◽  
Vol 5 (8) ◽  
pp. 1410-1414 ◽  
Author(s):  
Xiaowei Miao ◽  
Cédric Fischmeister ◽  
Christian Bruneau ◽  
Pierre H. Dixneuf ◽  
Jean-Luc Dubois ◽  
...  
Keyword(s):  
Ruthenium Catalysts ◽  
Direct Access ◽  
Cross Metathesis ◽  
Hydrogenation Of Nitriles

Functionalization and cancer-targeting design of ruthenium complexes for precise cancer therapy

2019 ◽  
Vol 55 (67) ◽  
pp. 9904-9914 ◽  
Author(s):  
Jinggong Liu ◽  
Haoqiang Lai ◽  
Zushuang Xiong ◽  
Bolai Chen ◽  
Tianfeng Chen
Keyword(s):  
Targeted Therapy ◽  
Cancer Therapy ◽  
Photothermal Therapy ◽  
Ruthenium Complex ◽  
Ruthenium Complexes ◽  
Cancer Targeting ◽  
Bio Imaging

Herein, the functionalized Ruthenium complex applied for bio-imaging, photodynamic/photothermal therapy, precise targeted therapy and theranostics application have been discussed.

Assembly of ruthenium complexes on double stranded DNA using mismatch binding ligands

2020 ◽  
Vol 56 (39) ◽  
pp. 5227-5230
Author(s):  
Lu Ni ◽  
Takeshi Yamada ◽  
Kazuhiko Nakatani
Keyword(s):  
Ruthenium Complex ◽  
Ruthenium Complexes ◽  
Double Stranded Dna

A new molecule containing an NCD moiety and a ruthenium complex was prepared, allowing the assembly of adjoining ruthenium complexes on single dsDNA.

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