ChemInform Abstract: Palladium Supported on Oleic Acid-coated Magnetic Nanoparticle as an Efficient Catalyst for Heck Coupling Reaction in Aqueous Media.

ChemInform ◽  
2015 ◽  
Vol 46 (19) ◽  
pp. no-no
Author(s):  
Ezzat Rafiee ◽  
Ali Ataei ◽  
Mohammad Joshaghani
Keyword(s):  
Oleic Acid ◽  
Magnetic Nanoparticle ◽  
Aqueous Media ◽  
Coupling Reaction ◽  
Heck Coupling ◽  
Efficient Catalyst

An operationally simple green procedure for the synthesis of dihydropyrimido[4,5-d]pyrimidinetriones using CuI nanoparticles as a highly efficient catalyst

2015 ◽  
Vol 70 (3) ◽  
pp. 171-176 ◽  
Author(s):  
Shahrzad Abdolmohammadi ◽  
Maryam Afsharpour
Keyword(s):  
Room Temperature ◽  
Aqueous Media ◽  
Coupling Reaction ◽  
Aromatic Aldehydes ◽  
Significant Loss ◽  
Efficient Catalyst ◽  
Nano Crystalline ◽  
Simple Protocol ◽  
High Yields ◽  
Green Procedure

AbstractA green, efficient and simple protocol was developed for the synthesis of dihydropyrimido[4,5-d]pyrimidinetrione derivatives via a coupling reaction of 6-aminouracils, aromatic aldehydes and urea in aqueous media in the presence of nano-crystalline CuI at room temperature. The products were obtained in high yields. CuI nanoparticles can be recycled three times without significant loss of catalytic activity.

Combination of palladium and oleic acid coated-magnetite particles: Characterization and using in Heck coupling reaction with magnetic recyclability

2014 ◽  
Vol 409 ◽  
pp. 302-309 ◽  
Author(s):  
Ezzat Rafiee ◽  
Ali Ataei ◽  
Shirin Nadri ◽  
Mohammad Joshaghani ◽  
Sara Eavani
Keyword(s):  
Oleic Acid ◽  
Coupling Reaction ◽  
Heck Coupling ◽  
Magnetite Particles

scholarly journals Facile Synthesis and Characterization of Palladium@Carbon Catalyst for the Suzuki-Miyaura and Mizoroki-Heck Coupling Reactions

2021 ◽  
Vol 11 (11) ◽  
pp. 4822
Author(s):  
Hamed M. Alshammari ◽  
Obaid F. Aldosari ◽  
Mohammad Hayal Alotaibi ◽  
Raja L. Alotaibi ◽  
Mosaed S. Alhumaimess ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Activated Carbon ◽  
Coupling Reaction ◽  
Aryl Halides ◽  
High Catalytic Activity ◽  
Coupling Reactions ◽  
Heck Coupling ◽  
Efficient Catalyst ◽  
X Ray ◽  
Suzuki Reactions

Palladium-based carbon catalysts (Pd/C) can be potentially applied as an efficient catalyst for Suzuki–Miyaura and Mizoroki–Heck coupling reactions. Herein, a variety of catalysts of palladium on activated carbon were prepared by varying the content of ‘Pd’ via an in situ reduction method, using hydrogen as a reducing agent. The as-prepared catalysts (0.5 wt % Pd/C, 1 wt % Pd/C, 2 wt % Pd/C and 3 wt % Pd/C) were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and Brunauer–Emmett–Teller (BET) analyses. The catalysts were tested as a coupling catalyst for Suzuki–Miyaura coupling reactions involving aryl halides and phenyl boronic acid. The optimization of the catalyst by varying the palladium content on the activated carbon yielded Pd/C catalysts with very high catalytic activity for Suzuki reactions of aryl halides and a Mizoroki–Heck cross-coupling reaction of 4-bromoanisol and acrylic acid in an aqueous medium. A high ‘Pd’ content and uniform ‘Pd’ impregnation significantly affected the activity of the catalysts. The catalytic activity of 3% Pd/C was found to make it a more efficient catalyst when compared with the other synthesized Pd/C catalysts. Furthermore, the catalyst reusability was also tested for Suzuki reactions by repeatedly performing the same reaction using the recovered catalyst. The 3% Pd/C catalyst displayed better reusability even after several reactions.

A facile synthesis of a solvent-dispersible magnetically recoverable Pd0 catalyst for the C–C coupling reaction

RSC Advances ◽  
2016 ◽  
Vol 6 (61) ◽  
pp. 56028-56034 ◽  
Author(s):  
Li Wu ◽  
Bin Yuan ◽  
Mengmeng Liu ◽  
Hongfei Huo ◽  
Yu Long ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
High Yield ◽  
Heck Coupling ◽  
Facile Synthesis ◽  
Efficient Catalyst ◽  
Cross Coupling Reaction

A Pd0/Fe3O4-DA/DMG catalyst exhibited excellent catalytic activity toward the Suzuki, Heck and Kumada cross coupling reaction with a high yield. It is an especially efficient catalyst for Suzuki and Heck coupling in water.

scholarly journals Palladium-Catalyzed Heck Coupling Reaction of Aryl Bromides in Aqueous Media Using Tetrahydropyrimidinium Salts as Carbene Ligands

Molecules ◽  
2010 ◽  
Vol 15 (2) ◽  
pp. 649-659 ◽  
Author(s):  
Sedat Yaşar ◽  
Emine Özge Özcan ◽  
Nevin Gürbüz ◽  
Bekir Çetinkaya ◽  
İsmail Özdemir
Keyword(s):  
Aqueous Media ◽  
Coupling Reaction ◽  
Heck Coupling ◽  
Carbene Ligands ◽  
Aryl Bromides ◽  
Palladium Catalyzed

scholarly journals An effective Pd nanocatalyst in aqueous media: stilbene synthesis by Mizoroki–Heck coupling reaction under microwave irradiation

2017 ◽  
Vol 13 ◽  
pp. 1717-1727 ◽  
Author(s):  
Carolina S García ◽  
Paula M Uberman ◽  
Sandra E Martín
Keyword(s):  
Microwave Irradiation ◽  
Aqueous Media ◽  
Coupling Reaction ◽  
Catalyst Loading ◽  
Coupling Reactions ◽  
Heck Coupling ◽  
Turnover Frequency ◽  
High Turnover ◽  
Aryl Bromides ◽  
Simple Product

Aqueous Mizoroki–Heck coupling reactions under microwave irradiation (MW) were carried out with a colloidal Pd nanocatalyst stabilized with poly(N-vinylpyrrolidone) (PVP). Many stilbenes and novel heterostilbenes were achieved in good to excellent yields starting from aryl bromides and different olefins. The reaction was carried out in a short reaction time and with low catalyst loading, leading to high turnover frequency (TOFs of the order of 100 h−1). The advantages like operational simplicity, high robustness, efficiency and turnover frequency, the utilization of aqueous media and simple product work-up make this protocol a great option for stilbene syntheses by Mizoroki–Heck reaction.

Au–Pd bimetallic nanoparticles supported on a high nitrogen-rich ordered mesoporous carbon as an efficient catalyst for room temperature Ullmann coupling of aryl chlorides in aqueous media

2018 ◽  
Vol 54 (52) ◽  
pp. 7155-7158 ◽  
Author(s):  
Babak Karimi ◽  
Hossein Barzegar ◽  
Hojatollah Vali
Keyword(s):  
Mesoporous Carbon ◽  
Room Temperature ◽  
Bimetallic Nanoparticles ◽  
Aqueous Media ◽  
Coupling Reaction ◽  
Efficient Catalyst ◽  
Aryl Chlorides ◽  
Ordered Mesoporous ◽  
Pd Alloy ◽  
Ullmann Coupling

An ionic liquid derived highly nitrogen-rich mesoporous carbon supported Au–Pd alloy was found to be an efficient and recyclable catalyst for the Ullmann coupling reaction of various aryl chlorides at room temperature.

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