Synthesis of norbornene/divinylbenzene copolymers catalyzed by anilinonaphthoquinone‐ligated nickel complexes and their applications for the synthesis of graft polymers

2020 ◽  
Vol 58 (11) ◽  
pp. 1564-1570
Author(s):  
Samiul Islam Chowdhury ◽  
Ryo Tanaka ◽  
Yuushou Nakayama ◽  
Takeshi Shiono
Keyword(s):  
Nickel Complexes ◽  
Graft Polymers

Spatiotemporal Control of Amide Radicals During Photocatalysis

2020 ◽  
Author(s):  
Shogo Mori ◽  
Takahiro Aoki ◽  
Kaliyamoorthy Selvam ◽  
Shunichi Fukuzumi ◽  
Jieun Jung ◽  
...  
Keyword(s):  
Organic Synthesis ◽  
Nickel Complex ◽  
Nickel Complexes ◽  
Semiconductor Material ◽  
Radical Reactions ◽  
Substitution Reactions ◽  
Carbon Neutrality ◽  
Spatiotemporal Control ◽  
Scalable Production ◽  
Salt Waste

Despite the continuing popularity of radical reactions in organic synthesis, much remains to be explored in this area. Herein, we describe how spatiotemporal control can be exerted over the formation and reactivity of divergent exchangeable formamide radicals using nickel complexes with a semiconductor material (TiO<sub>2</sub>) under irradiation from near-UV–Vis light. Depending on the bipyridine ligand used and the quantity of the nickel complex that is hybridized on or nonhydridized over the TiO<sub>2</sub> surface, these radicals selectively undergo substitution reactions at the carbon center of carbon–bromine bonds that proceed via three different pathways. As the scalable production of formamides from CO<sub>2</sub> does not produce salt waste, these methods could add a new dimension to the search for carbon neutrality through the indirect incorporation of CO<sub>2</sub> into organic frameworks.

Synthesis of unsaturated amines from butadiene and allylamines in presence of palladium and nickel complexes

1978 ◽  
Vol 27 (6) ◽  
pp. 1230-1232 ◽  
Author(s):  
U. M. Dzhemilev ◽  
F. A. Selimov ◽  
A. Z. Yakupova ◽  
G. A. Tolstikov
Keyword(s):  
Nickel Complexes

scholarly journals Radiation-Induced Asymmetric Grafting of Different Monomers into Base Films to Prepare Novel Bipolar Membranes

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 2028
Author(s):  
Shin-ichi Sawada ◽  
Yasunari Maekawa
Keyword(s):  
Acrylic Acid ◽  
Anion Exchange ◽  
Graft Polymerization ◽  
The Other ◽  
Practical Applications ◽  
Bipolar Membranes ◽  
Graft Polymers ◽  
Grafting Reactions ◽  
Radiation Induced

We prepared novel bipolar membranes (BPMs) consisting of cation and anion exchange layers (CEL and AEL) using radiation-induced asymmetric graft polymerization (RIAGP). In this technique, graft polymers containing cation and anion exchange groups were introduced into a base film from each side. To create a clear CEL/AEL boundary, grafting reactions were performed from each surface side using two graft monomer solutions, which are immiscible in each other. Sodium p-styrenesulfonate (SSS) and acrylic acid (AA) in water were co-grafted from one side of the base ethylene-co-tetrafluoroethylene film, and chloromethyl styrene (CMS) in xylene was simultaneously grafted from the other side, and then the CMS units were quaternized to afford a BPM. The distinct SSS + AA- and CMS-grafted layers were formed owing to the immiscibility of hydrophilic SSS + AA and hydrophobic CMS monomer solutions. This is the first BPM with a clear CEL/AEL boundary prepared by RIAGP. However, in this BPM, the CEL was considerably thinner than the AEL, which may be a problem in practical applications. Then, by using different starting times of the first SSS+AA and second CMS grafting reactions, the CEL and AEL thicknesses was found to be controlled in RIAGP.

Progress in preparation and characterization of silylene iron, cobalt and nickel complexes

2021 ◽  
Author(s):  
Wenjing Yang ◽  
Yanhong Dong ◽  
Hongjian Sun ◽  
Xiaoyan Li
Keyword(s):  
Nickel Complexes ◽  
Electron Cloud ◽  
Synthesis And Characterization ◽  
Iron Cobalt ◽  
Cloud Density ◽  
Cobalt And Nickel

The synthesis and characterization of Fe, Co and Ni complexes supported by silylene ligands in recent ten years are summarized. Due to the decrease of electron cloud density on Si...

S,C- and S,S-coupling via dithiolate transfer reactions from tin to nickel complexes

2009 ◽  
pp. 6825 ◽  
Author(s):  
Elena Cerrada ◽  
Ana Moreno ◽  
Mariano Laguna
Keyword(s):  
Nickel Complexes ◽  
Transfer Reactions

Mechanistic studies of DNA and RNA oxidation by macrocyclic nickel complexes.

1993 ◽  
Vol 51 (1-2) ◽  
pp. 517
Author(s):  
James G. Muller ◽  
Ping Zheng ◽  
Chien-Chung Cheng ◽  
Ren-Hwa Yeh ◽  
Steven E. Rokita ◽  
...  
Keyword(s):  
Nickel Complexes ◽  
Mechanistic Studies ◽  
Dna And Rna ◽  
Rna Oxidation ◽  
Macrocyclic Nickel
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