Highly active dinuclear cobalt complexes for solvent-free cycloaddition of CO2 to epoxides at ambient pressure

2019 ◽  
Vol 55 (57) ◽  
pp. 8274-8277 ◽  
Author(s):  
Zafar A. K. Khattak ◽  
Hussein A. Younus ◽  
Nazir Ahmad ◽  
Habib Ullah ◽  
Suleman Suleman ◽  
...  
Keyword(s):  
Ambient Pressure ◽  
Coupling Reaction ◽  
Cobalt Complexes ◽  
Solvent Free ◽  
Highly Active

Dinuclear Co-based catalysts are used for the coupling reaction of epoxides and CO2 in the presence of a cocatalyst.

Highly active zinc oxide-supported lithium oxide catalyst for solvent-free Knoevenagel condensation

2021 ◽  
Vol 133 (3) ◽  
Author(s):  
Prasad Sunkara ◽  
Keshavulu Masula ◽  
Veerasomaiah Puppala ◽  
Yadagiri Bhongiri ◽  
Vijay Kumar Pasala ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Oxide Catalyst ◽  
Knoevenagel Condensation ◽  
Solvent Free ◽  
Lithium Oxide ◽  
Highly Active

scholarly journals Preparation of Al/Fe-PILC clay catalysts from concentrated precursors: enhanced hydrolysis of pillaring metals and intercalation

RSC Advances ◽  
2020 ◽  
Vol 10 (66) ◽  
pp. 40450-40460
Author(s):  
Carlos Andrés Vallejo ◽  
Luis Alejandro Galeano ◽  
Raquel Trujillano ◽  
Miguel Ángel Vicente ◽  
Antonio Gil
Keyword(s):  
Solvent Free ◽  
Peroxide Oxidation ◽  
Highly Active ◽  
Wet Peroxide Oxidation ◽  
Catalytic Wet Peroxide Oxidation ◽  
Hydrolysis Of ◽  
Clay Catalysts

Significantly intensified preparation of Al/Fe-hydrolysed-pillaring solutions and solvent-free intercalation of bentonites yielding Al/Fe-PILCs highly active in catalytic wet peroxide oxidation.

REACTION OF SOME SALICYL ALDEHYDE DERIVATIVES WITH AMINES ANDPHENYL ACETYLENE

2020 ◽  
Vol 65 (10) ◽  
pp. 61-66
Author(s):  
Trang Nguyen Thi Minh ◽  
Trang Tran Thi Thu ◽  
Hoan Duong Quoc
Keyword(s):  
Coupling Reaction ◽  
Solvent Free ◽  
Metal Free ◽  
Phenyl Acetylene ◽  
A3 Coupling ◽  
Free Metal

Salicylic aldehydes, amine, and phenyl acetylene could react under the solvent-free, metal-free conditions to form propargylamines 1-4 via A3 coupling reaction. The yield of the reaction was up to 83% for 5h. In acetonitrile, the amine became a catalyst to form 6-bromo-3-(5-bromo-2-hydroxybenzyl)-2-phenyl-4Hchromen-4-one (5). Under microwave conditions, it took about 20 min to complete the reaction and gave the same yields as theconventional method. Structures of these compounds were firm with NMR, MS spectra.

Porous cross-linked polymer copper and iridium catalyzed the synthesis of quinoxalines and functionalized ketones under solvent-free conditions

2021 ◽  
Author(s):  
Jiahao Li ◽  
Minyi Yu ◽  
Zheng-Chao Duan ◽  
Haiyan Zhu ◽  
Wei Yao ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Solvent Free ◽  
Highly Active ◽  
Solvent Free Conditions ◽  
Catalytic Applications

The development of highly active and efficient ligands is recognized to be crucial for catalytic applications of coordination polymers under specific conditions, such as solvent-free or in water. A new...

Unprecedented one-pot multicomponent synthesis of propargylamines using Amberlyst A-21 supported CuI under solvent-free conditions

RSC Advances ◽  
2015 ◽  
Vol 5 (57) ◽  
pp. 46074-46087 ◽  
Author(s):  
Giovanna Bosica ◽  
John Gabarretta
Keyword(s):  
Coupling Reaction ◽  
Solvent Free ◽  
Environmentally Benign ◽  
Terminal Alkynes ◽  
Multicomponent Synthesis ◽  
One Pot ◽  
Solvent Free Conditions

An environmentally benign, one-pot, A3-coupling reaction of various aldehydes, amines and terminal alkynes for the synthesis of propargylamine was catalysed by Amberlyst A-21 supported CuI, under heterogeneous and solvent-free conditions.

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