Nickel complex-catalyzed codimerization of allyl esters with compounds in the norbornene series

1987 ◽  
Vol 36 (1) ◽  
pp. 122-131 ◽  
Author(s):  
U. M. Dzhemilev ◽  
R. I. Khusnutdinov ◽  
D. K. Galeev ◽  
O. M. Nefedov ◽  
G. A. Tolstikov
Keyword(s):  
Nickel Complex ◽  
Norbornene Series ◽  
Allyl Esters

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.

Tetranuclear Copper and Mononuclear Nickel Complex of the Schiff Base of (3Z)-3-Hydrazonobutan-2-One Oxime with Different Aromatic Carbonyl Compounds: Synthesis, Single Crystal X-Ray Structure, Catecholase Activity, Phenoxazinone Synthase Activity, Catalytic Study for the Homocoupling of Benzyl Amines

2019 ◽  
Author(s):  
Swaraj Sengupta ◽  
Sahanwaj Khan ◽  
Shyamal K. Chattopadhyay ◽  
Indrani Banerjee ◽  
Tarun K. Panda ◽  
...  
Keyword(s):  
Schiff Base ◽  
Single Crystal ◽  
Copper Complex ◽  
Carbonyl Compounds ◽  
Nickel Complex ◽  
Schiff Base Ligands ◽  
X Ray ◽  
Phenoxazinone Synthase ◽  
Catecholase Activity ◽  
Aromatic Carbonyl Compounds

Synthesis and characterisation of one trinuclear copper complex, ([Cu<sub>3</sub>L<sub>3</sub>O]ClO<sub>4</sub>) (<b>1</b>) and one nickel complex ([Ni(L'H)<sub>2</sub>(dmso)<sub>2</sub>](ClO<sub>4</sub>)<sub>2</sub>) (<b>2</b>) with Schiff base ligands: (3Z)-3-((Z)-(1-(thiophen-2-yl)ethylidene)hydrazono)butan-2-one oxime (LH) and 1-(pyridin-2-yl)ethylidene)hydrazono)butan-2-one oxime (L<sup>'</sup>H). <b>1</b> shows high catecholase activity and has also been tested as a catalyst for the synthesis of benzylimine. <b>2 </b> shows phenoxazinone synthase activity.

scholarly journals Synthesis, oligomerization and catalytic studies of a redox-active Ni4-cubane: a detailed mechanistic investigation

RSC Advances ◽  
2021 ◽  
Vol 11 (37) ◽  
pp. 22849-22858
Author(s):  
Saroj Kumar Kushvaha ◽  
Maria Francis ◽  
Jayasree Kumar ◽  
Ekta Nag ◽  
Prathap Ravichandran ◽  
...  
Keyword(s):  
Nickel Complex ◽  
Efficient Catalyst ◽  
Aromatic Heterocycles ◽  
Redox Active ◽  
Mechanistic Investigation

A robust tetrameric nickel complex [Ni4((Oal−)2L-Me)4(s)4] (s = solvent) with cubane-like Ni4O4 core topology identified as the efficient catalyst for the diastereoselective cyclopropanation of aromatic heterocycles.

Concomitant Polymorphs: An Alternative to Modulate Oxygen Evolution Performance of Mononuclear Nickel Complex

2021 ◽  
Author(s):  
Chen Hu ◽  
Qing-Qing Huang ◽  
Haibing Xu ◽  
Yuexing Zhang ◽  
Xu Peng ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Evolution ◽  
Nickel Complex ◽  
Crystal Packing ◽  
The Relationship

The availability of polymorphs of metallic complexes provides an opportunity to reveal the relationship between crystal packing and catalytic activity. Herein, we immobilize two stable concomitant polymorphs (green NiL2-G and...

scholarly journals Hydrosilylation of Carbonyl Compounds Catalyzed by a Nickel complex bearing a PBP‐ligand

2021 ◽  
Author(s):  
Amor Rodriguez ◽  
Jose Antonio Fernández ◽  
Juan Manuel García ◽  
Pablo Ríos
Keyword(s):  
Carbonyl Compounds ◽  
Nickel Complex

scholarly journals Nickel-catalyzed oxidative C–H/N–H annulation of N-heteroaromatic compounds with alkynes

2019 ◽  
Vol 10 (11) ◽  
pp. 3242-3248 ◽  
Author(s):  
Atsushi Obata ◽  
Akane Sasagawa ◽  
Ken Yamazaki ◽  
Yusuke Ano ◽  
Naoto Chatani
Keyword(s):  
Nickel Complex ◽  
Catalytic Amount ◽  
Pyrazole Derivatives ◽  
Heteroaromatic Compounds

The reaction of N-heteroaromatic compounds, such as 2-aryl-pyrrole, benzimidazole, imidazole, indole, and pyrazole derivatives, with alkynes in the presence of a catalytic amount of a nickel complex results in C–H/N–H oxidative annulation.

scholarly journals Transition-metal-free allylation of 2-azaallyls with allyl ethers through polar and radical mechanisms

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Guogang Deng ◽  
Shengzu Duan ◽  
Jing Wang ◽  
Zhuo Chen ◽  
Tongqi Liu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Allyl Ether ◽  
Metal Catalyst ◽  
Metal Free ◽  
Allyl Ethers ◽  
Bond Forming ◽  
Allyl Halides ◽  
Synthetic Utility ◽  
Insight Into ◽  
Allyl Esters

AbstractAllylation of nucleophiles with highly reactive electrophiles like allyl halides can be conducted without metal catalysts. Less reactive electrophiles, such as allyl esters and carbonates, usually require a transition metal catalyst to facilitate the allylation. Herein, we report a unique transition-metal-free allylation strategy with allyl ether electrophiles. Reaction of a host of allyl ethers with 2-azaallyl anions delivers valuable homoallylic amine derivatives (up to 92%), which are significant in the pharmaceutical industry. Interestingly, no deprotonative isomerization or cyclization of the products were observed. The potential synthetic utility and ease of operation is demonstrated by a gram scale telescoped preparation of a homoallylic amine. In addition, mechanistic studies provide insight into these C(sp3)–C(sp3) bond-forming reactions.

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