Recent developments in the metal catalysed cross‐coupling reactions for the synthesis of the enone system of chalcones

2020 ◽  
Vol 34 (12) ◽  
Author(s):  
Elizabeth J. Diana ◽  
U.S. Kanchana ◽  
Thomas V. Mathew ◽  
Gopinathan Anilkumar
Keyword(s):  
Cross Coupling ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Recent Developments

scholarly journals Recent advances in the application of nano-catalysts for Hiyama cross-coupling reactions

RSC Advances ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 3185-3202 ◽  
Author(s):  
Aazam Monfared ◽  
Robab Mohammadi ◽  
Sheida Ahmadi ◽  
Mohammad Nikpassand ◽  
Akram Hosseinian
Keyword(s):  
Cross Coupling ◽  
Metal Nanoparticle ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Recent Advances ◽  
Recent Developments ◽  
Nano Catalysts

This mini-review highlights the recent developments in the field of metal nanoparticle (NP) catalyzed Hiyama cross-coupling reactions.

Sonochemistry in Transition Metal Catalyzed Cross-coupling Reactions: Recent Developments

2020 ◽  
Vol 23 (28) ◽  
pp. 3137-3153 ◽  
Author(s):  
Sankuviruthiyil M. Ujwaldev ◽  
K. R. Rohit ◽  
Sankaran Radhika ◽  
Gopinathan Anilkumar
Keyword(s):  
Transition Metal ◽  
Cross Coupling ◽  
Reaction Rates ◽  
Coupling Reactions ◽  
Reaction Conditions ◽  
Cross Coupling Reactions ◽  
Recent Developments ◽  
Ultrasound Assisted ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

: Transition metal catalyzed cross-coupling reactions have always been very important in synthetic organic chemistry due to their versatility in forming all sorts of carbon-carbon and carbon-hetero atom bonds. Incorporation of ultrasound assistance to these protocols resulted in milder reaction conditions, faster reaction rates, etc. This review focuses on the contributions made by ultrasound-assisted protocols towards transition metal catalyzed crosscoupling reactions.

Recent Developments in Negishi Cross-Coupling Reactions

ACS Catalysis ◽  
2016 ◽  
Vol 6 (3) ◽  
pp. 1540-1552 ◽  
Author(s):  
Diana Haas ◽  
Jeffrey M. Hammann ◽  
Robert Greiner ◽  
Paul Knochel
Keyword(s):  
Cross Coupling ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Recent Developments

scholarly journals Modification of Azobenzenes by Cross-Coupling Reactions

Synthesis ◽  
2021 ◽  
Author(s):  
Anne Staubitz ◽  
Melanie Walther ◽  
Waldemar Kipke ◽  
Sven Schultzke ◽  
Souvik Ghosh
Keyword(s):  
Late Stage ◽  
Palladium Catalysis ◽  
Cross Coupling ◽  
Molecular Switches ◽  
Copper Catalysis ◽  
Coupling Reactions ◽  
Nickel Catalysis ◽  
Cross Coupling Reactions ◽  
Recent Developments

AbstractAzobenzenes are among the most extensively used molecular switches for many different applications. The need to tailor them to the required task often requires further functionalization. Cross-coupling reactions are ideally suited for late-stage modifications. This review provides an overview of recent developments in the modification of azobenzene and its derivatives by cross-coupling reactions.1 Introduction2 Azobenzenes as Formally Electrophilic Components2.1 Palladium Catalysis2.2 Nickel Catalysis2.3 Copper Catalysis2.4 Cobalt Catalysis3 Azobenzenes as Formally Nucleophilic Components3.1 Palladium Catalysis3.2 Copper Catalysis3.3 C–H Activation Reactions4 Azobenzenes as Ligands in Catalysts5 Diazocines5.1 Synthesis5.2 Cross-Coupling Reactions6 Conclusion

scholarly journals Photo-Induced Thiolate Catalytic Activation of Inert Caryl-Hetero Bonds for Radical Borylation

2020 ◽  
Author(s):  
Shun Wang ◽  
Hua Wang ◽  
Burkhard Koenig
Keyword(s):  
Bond Activation ◽  
Reducing Power ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Reaction Conditions ◽  
Catalytic Activation ◽  
Cross Coupling Reactions ◽  
Recent Developments ◽  
Leaving Groups ◽  
Metal Catalyzed

Cross-coupling reactions are essential tools in modern synthesis of drugs, natural products and materials. The recent developments in photocatalytic radical generation have improved and expanded the classic metal-catalyzed cross coupling reactions even further. However, for sp<sup>2</sup> cross coupling reactions aryl halides or related active leaving groups, such as triflates, are required. Substituted arenes bearing strong C-X bonds remain inert to current methods. We describe now a new thiolate photocatalysis for the activation of inert substituted arenes in ipso-borylation reactions. This catalytic system exhibits strong reducing power and allows the borylation of stable C<sub>aryl</sub>−F, C<sub>aryl</sub>−O, C<sub>aryl</sub>-N and C<sub>aryl</sub>−S bonds, which are considered as chemically stable at mild reaction conditions. Our method considerably widens the available substrate scope of aryl radical precursors and we anticipate that this report will inspire new chemistry based on inert chemical bond activation.

scholarly journals Recent Developments in Nanostructured Palladium and Other Metal Catalysts for Organic Transformation

2019 ◽  
Vol 2019 ◽  
pp. 1-17 ◽  
Author(s):  
S. M. Shakil Hussain ◽  
Muhammad Shahzad Kamal ◽  
Mohammad Kamal Hossain
Keyword(s):  
Academic Research ◽  
Volume Ratio ◽  
Cross Coupling ◽  
Industrial Applications ◽  
Mixed Metal Oxide ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Nonpolar Solvents ◽  
Recent Developments ◽  
Potential Applications

Nanocatalysis is an emerging field of research and is applicable to nearly all kinds of catalytic organic conversions. Nanotechnology is playing an important role in both industrial applications and academic research. The catalytic activities become pronounced as the size of the catalyst reduces and the surface area-to-volume ratio increases which ultimately enhance the activity and selectivity of nanocatalysts. Similarly, the morphology of the particles also has a great impact on the activity and selectivity of nanocatalysts. Moreover, the electronic properties and geometric structure of nanocatalysts can be affected by polar and nonpolar solvents. Various forms of nanocatalysts have been reported including supported nanocatalysts, Schiff-based nanocatalysts, graphene-based nanocatalysts, thin-film nanocatalysts, mixed metal oxide nanocatalysts, magnetic nanocatalysts, and core-shell nanocatalysts. Among a variety of different rare earth and transition metals, palladium-based nanocatalysts have been extensively studied both in academia and in the industry because of their applications such as in carbon-carbon cross-coupling reactions, carbon-carbon homocoupling reactions, carbon-heteroatom cross-coupling reactions, and C-H activation, hydrogenation, esterification, oxidation, and reduction. The current review highlights the recent developments in the synthesis of palladium and some other metal nanocatalysts and their potential applications in various organic reactions.

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