Catalytic Dinitrogen Fixation to Form Ammonia at Ambient Reaction Conditions Using Transition Metal-Dinitrogen Complexes

2016 ◽  
Vol 16 (3) ◽  
pp. 1549-1577 ◽  
Author(s):  
Yoshiaki Tanabe ◽  
Yoshiaki Nishibayashi
Keyword(s):  
Transition Metal ◽  
Dinitrogen Fixation ◽  
Reaction Conditions ◽  
Dinitrogen Complexes

Development of catalytic nitrogen fixation using transition metal–dinitrogen complexes under mild reaction conditions

2018 ◽  
Vol 47 (33) ◽  
pp. 11290-11297 ◽  
Author(s):  
Yoshiaki Nishibayashi
Keyword(s):  
Nitrogen Fixation ◽  
Transition Metal ◽  
Recent Progress ◽  
Reaction Conditions ◽  
Dinitrogen Complexes

This paper describes our recent progress in catalytic nitrogen fixation using transition metal–dinitrogen complexes as catalysts.

Direct Cyclization of Alkenyl Thioester via Transition Metal‐hydrogen Atom Transfer/radical‐polar Crossover Mechanism

2019 ◽  
Author(s):  
Shiori Date ◽  
Kensei Hamasaki ◽  
Karen Sunagawa ◽  
Hiroki Koyama ◽  
Chikayoshi Sebe ◽  
...  
Keyword(s):  
Natural Products ◽  
Hydrogen Atom ◽  
Transition Metal ◽  
Hydrogen Atom Transfer ◽  
Synthetic Method ◽  
Atom Transfer ◽  
Reaction Conditions ◽  
Hydride Hydrogen ◽  
Sulfur Heterocycles ◽  
One Step

<div>We report here a catalytic, Markovnikov selective, and scalable synthetic method for the synthesis of saturated sulfur heterocycles, which are found in the structures of pharmaceuticals and natural products, in one step from an alkenyl thioester. Unlike a potentially labile alkenyl thiol, an alkenyl thioester is stable and easy to prepare. The powerful Co catalysis via a cobalt hydride hydrogen atom transfer and radical-polar crossover mechanism enabled simultaneous cyclization and deprotection. The substrate scope was expanded by the extensive optimization of the reaction conditions and tuning of the thioester unit.</div>

scholarly journals N-Heterocyclic Carbene/Magnesium Co-catalyzed Radical Relay Assembly of Aliphatic Keto-nitriles

2020 ◽  
Author(s):  
Lei Chen ◽  
Shiyi Jin ◽  
Jian Gao ◽  
Tongtong Liu ◽  
Yuebo Shao ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Transition Metal ◽  
Single Electron ◽  
Single Electron Transfer ◽  
Reaction Conditions ◽  
Eda Complex

An N-heterocyclic carbene and magnesium co-catalyzed three-component alkylacylation of alkenes with cycloketone oxime esters and aldehydes was presented. This method displayed good scope generality, providing a transition metal and photo-redox free pathway to access various multi-functionalized aliphatic keto-nitrile structures under mild reaction conditions. Moreover, this strategy is supposed to follow a radical relay mechanism via a single electron transfer (SET) event of Mg/oxime ester/Breslow intermediate ternary electron donating acceptor (EDA) complex.

Transition-metal-free arylation of benzoxazoles with aryl nitriles

2018 ◽  
Vol 5 (11) ◽  
pp. 1811-1814 ◽  
Author(s):  
Aizhen Wu ◽  
Quan Chen ◽  
Wei Liu ◽  
Lijun You ◽  
Yifan Fu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Reaction Conditions ◽  
Metal Free ◽  
Simple Reaction ◽  
Aryl Nitriles

Transition-metal-free arylation of benzoxazoles with aryl nitriles has been developed to afford important 2-aryl benzoxazoles under simple reaction conditions.

scholarly journals Sulfoxonium Ylide Derived Metal Carbenoids in Organic Synthesis

Synthesis ◽  
2018 ◽  
Vol 51 (03) ◽  
pp. 612-628 ◽  
Author(s):  
Janakiram Vaitla ◽  
Annette Bayer
Keyword(s):  
Transition Metal ◽  
Organic Synthesis ◽  
Transition Metal Catalysis ◽  
Transfer Reactions ◽  
Reaction Conditions ◽  
Widespread Application ◽  
Metal Catalysis ◽  
Half Century ◽  
Metal Carbenoids

As pioneered by Corey and Chaykovsky, sulfoxonium ylides have had widespread application in organic synthesis for more than a half century. In most of the reactions, sulfoxonium ylides were used to react with electrophiles. Under suitable reaction conditions these ylides can generate metal carbenoids and react with nucleophiles. By combining the typical reactivity of sulfoxonium ylides with transition-metal catalysis, a growing number of investigations have expanded their application in organic synthesis. This review provides an update on the preparation of sulfoxonium ylides and their applications in carbenoid transfer reactions.1 Introduction2 Preparation of Sulfoxonium Ylides3 Investigation for Carbenoid Formation from Sulfoxonium Ylide 4 X–H (X = N, O, S, C) Functionalization Reactions5 Polymerizaton of Carbenoids Generated from Sulfoxonium Ylides6 Conclusion and Perspective

New cobalt(ii) coordination designs and the influence of varying chelate characters, ligand charges and incorporated group I metal ions on enzyme-like oxidative coupling activity

2020 ◽  
Vol 44 (35) ◽  
pp. 14849-14858
Author(s):  
Hammed Olawale Oloyede ◽  
Joseph Anthony Orighomisan Woods ◽  
Helmar Görls ◽  
Winfried Plass ◽  
Abiodun Omokehinde Eseola
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Active Site ◽  
Oxidative Coupling ◽  
Reaction Conditions ◽  
Group I ◽  
Mediated Catalysis

In transition-metal-mediated catalysis, design of new, well defined coordination architectures and subjecting them to catalysis testing under the same reaction conditions is a necessity tool for improved understanding of desirable active site geometries and characteristics.

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