NiO Nanoparticles: Efficient Catalyst for Four Component Coupling Reaction for Synthesis of Substituted Pyrroles

Palladium nanoparticles were efficiently prepared in situ by sodium cyanoborohydride reduction of Pd(ii) at room temperature using calcium-cholate hydrogel fibers as templates. The PdNPs self-organize on the gel fibers, which supports the controlled growth as well as stabilization of PdNPs. The hybrid xerogel was used as an efficient catalyst for the Suzuki coupling reaction in water.

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NiO nanoparticles: A highly efficient catalyst for the one-pot three-component synthesis of pyrano [2, 3-d] pyrimidine derivatives in green media.

Letters in Organic Chemistry ◽

10.2174/1570178618666211001115655 ◽

2021 ◽

Vol 18 ◽

Author(s):

Ellahe Sabbaghnasab ◽

Enayatollah Sheikhhosseini

Keyword(s):

Barbituric Acid ◽

Nio Nanoparticles ◽

Pyrimidine Derivatives ◽

One Pot ◽

Efficient Catalyst ◽

Environmental Friendliness ◽

Short Reaction Time ◽

Pyrimidine Synthesis ◽

Simple Processing ◽

The One

: NiO nanoparticles are utilized to effectively strengthen annulated pyrano [2, 3- d] pyrimidine synthesis through primary Knoevenagel, following Micheal and ultimate heterocyclization reactions of aldehyde, malononitrile, and barbituric acid. The characteristics of NiO nanoparticles are identified using advanced techniques, such as IR, UV, EDX, XRD, SEM, and TEM. The nano-NiO particles are mostly below < 100 nm in size with uniform spherical shapes. The adopted approach is advantages thanks to its simple processing, relatively short reaction time, often good to high average yields, convenient workability, and environmental friendliness.

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A New Heterogeneous Catalyst Obtained via Supramolecular Decoration of Graphene with a Pd2+ Azamacrocyclic Complex

Molecules ◽

10.3390/molecules24152714 ◽

2019 ◽

Vol 24 (15) ◽

pp. 2714 ◽

Cited By ~ 5

Author(s):

Matteo Savastano ◽

Paloma Arranz-Mascarós ◽

Maria Paz Clares ◽

Rafael Cuesta ◽

Maria Luz Godino-Salido ◽

...

Keyword(s):

Heterogeneous Catalyst ◽

Self Assembly ◽

Room Temperature ◽

Coupling Reaction ◽

Cross Coupling ◽

Assembly Process ◽

Efficient Catalyst ◽

Mild Conditions ◽

Cross Coupling Reaction ◽

Green Procedure

A new G-(H2L)-Pd heterogeneous catalyst has been prepared via a self-assembly process consisting in the spontaneous adsorption, in water at room temperature, of a macrocyclic H2L ligand on graphene (G) (G + H2L = G-(H2L)), followed by decoration of the macrocycle with Pd2+ ions (G-(H2L) + Pd2+ = G-(H2L)-Pd) under the same mild conditions. This supramolecular approach is a sustainable (green) procedure that preserves the special characteristics of graphene and furnishes an efficient catalyst for the Cu-free Sonogashira cross coupling reaction between iodobenzene and phenylacetylene. Indeed, G-(H2L)-Pd shows an excellent conversion (90%) of reactants into diphenylacetylene under mild conditions (50 °C, water, aerobic atmosphere, 14 h). The catalyst proved to be reusable for at least four cycles, although decreasing yields down to 50% were observed.

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Reduced graphene oxide supported Cu2O nanoparticles as an efficient catalyst for Sonogashira coupling reaction

Catalysis Communications ◽

10.1016/j.catcom.2017.07.020 ◽

2017 ◽

Vol 101 ◽

pp. 36-39 ◽

Cited By ~ 6

Author(s):

Bing Wang ◽

Yingyong Wang ◽

Xiaoning Guo ◽

Zhifeng Jiao ◽

Guoqiang Jin ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Coupling Reaction ◽

Sonogashira Coupling ◽

Efficient Catalyst ◽

Reduced Graphene ◽

Sonogashira Coupling Reaction ◽

Cu2o Nanoparticles

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A highly efficient catalyst for Suzuki–Miyaura coupling reaction of benzyl chloride under mild conditions

RSC Advances ◽

10.1039/c4ra06551d ◽

2014 ◽

Vol 4 (69) ◽

pp. 36437-36443 ◽

Cited By ~ 20

Author(s):

Zhenhong Guan ◽

Buyi Li ◽

Guoliang Hai ◽

Xinjia Yang ◽

Tao Li ◽

...

Keyword(s):

Catalytic Activity ◽

Benzyl Chloride ◽

Coupling Reaction ◽

Cross Coupling ◽

Coupling Reactions ◽

Efficient Catalyst ◽

Microporous Polymers ◽

Mild Conditions ◽

Highly Efficient ◽

Cross Coupling Reactions

Microporous polymers with built-in triphenylphosphine palladium exhibit highly efficient catalytic activity for cross-coupling reactions of benzyl chloride under mild conditions.

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