Pyrimidyl formamidine palladium(II) complex as a nanocatalyst for aqueous Suzuki-Miyaura coupling

Khormi, Afaf Y.; Farghaly, Thoraya A.; Shaaban, Mohamed R.

doi:10.1016/j.heliyon.2019.e01367

Cited by 13 publications

(4 citation statements)

References 54 publications

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“…Palladium-Based Nanocatalysts for Carbon-Carbon Cross-Coupling Reactions. Palladium-assisted nanocatalysts for carbon-carbon bond formation including Suzuki [32], Heck [33], Sonogashira [34], Negishi [35], Stille [36], Kumada [37], and Hiyama [38] cross-coupling reactions (Scheme 1) have made a huge impact on organic reactions because of mild reaction conditions and tolerance to various functional groups [39]. Such kinds of reactions showed extensive applications in the formation of pharmaceuticals, agrochemicals, and other important industrial products [40].…”

Section: Palladium-based Nanocatalystmentioning

confidence: 99%

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

Hussain

Kamal

Hossain

2019

Journal of Nanomaterials

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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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Section: Palladium-based Nanocatalystmentioning

confidence: 99%

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

Hussain

Kamal

Hossain

2019

Journal of Nanomaterials

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“…Experimentally, using microwaves as a power source for performing organic transformations was received a great interest due to its attainments in green methodologies especially that use water as a reaction medium [18][19][20][21]. In extension to our efforts in the eld of developing a new nitrogen containing heterocyclic ligands and using their palladium (II) complexes in many carbon-carbon cross coupling reactions [22][23][24][25][26], we explore in this work the synthesis of novel nano-sized benzothiazole-based Pd (II) complexes 4a,b (Scheme 2) and studying their catalytic e ciency in carboncarbon cross coupling reactions aryl halides with aryl boronic acids under microwaves irradiations in aqueous medium. example, the proton NMR spectrum of the 3a showed the resonance of protons of the two methyl groups of N(Me) 2 group as two singlet signals at δ 3.00 and 3.14ppm and two sets of triplets at δ 7.13 and 7.28 ppm with coupling constant J = 8.5 Hz due to the two-aromatic ring (CH) protons.…”

Section: Introductionmentioning

confidence: 99%

Benzothiazole-Based Palladium Complexes as Efficient Nano-Sized Catalysts for Microwave Hydrothermal Suzuki –Miyaura Cross-Couplings

Khormi

Abboud

Hamdy

et al. 2022

J Inorg Organomet Polym

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The paper describes the synthesis of a novel nano-sized phosphine-free benzothiazole-based palladium(II) complexes from easily accessible starting materials and studies their e ciency as catalysts for Suzuki Miyaura cross coupling reaction using water as a solvent under microwaves irradiations.Structural elucidation of the novel nano-sized benzthiazole-based complexes was achieved by analytical and physical characterization tools. The catalytic activity of the novel nanocatalysts was invetigated for SMC of aryl halides with arylboronic acids using water as a solvent and under microwaves irradiation conditions as green mild reaction conditions.

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“…Formamidines and related anions can bind transition metals. Recently , formamidines derivatives with Ni (II) [ 68 ] Au (I), Ag (I) [ 69 ] Co (II) [ 70 ] Cu (II) [ 71 ] Pt [ 72 ] and Pd [ 73 ] ions have been synthesized. Amidine functional group has various biological properties, such as anti-virus [ 74 ], anti-AIDS [ 75 ], anti-degenerative [ 76 ], anticancer [ 77 ], anti-platelet [ 78 ] and antimicrobial [ 79 ] activities.…”

Section: Introductionmentioning

confidence: 99%

The synthesis and characterization of Fe2O3@SiO2–SO3H nanofibers as a novel magnetic core-shell catalyst for formamidine and formamide synthesis

Ziyadi

Baghali²,

Heydari

2021

Heliyon

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Over the past several decades, the fabrication of novel ceramic nanofibers applicable in different areas has been a frequent focus of scientists around the world. Aiming to introduce novel ceramic core-shell nanofibers as a magnetic solid acid catalyst, Fe 2 O 3 @SiO 2 –SO 3 H magnetic nanofibers were prepared in this study using a modification of Fe 2 O 3 @SiO 2 core-shell nanofibers with chlorosulfonic acid to increase the acidic properties of these ceramic nanofibers. The products were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), energy dispersive X-ray spectroscope (EDS), vibrating sample magnetometer (VSM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). The prepared nanofibers were used as catalysts in formamide and formamidine synthesis. The treatment of aqueous formic acid using diverse amines with a catalytic amount of Fe 2 O 3 @SiO 2 –SO 3 H nanofibers as a reusable, magnetic and heterogeneous catalyst produced high yields of corresponding formamides at room temperature. Likewise, the reaction of diverse amines with triethyl orthoformate led to the synthesis of formamidine derivatives in excellent yields using this novel catalyst. The catalytic system was able to be recovered and reused at least five times without any catalytic activity loss. Thus, novel core-shell nanofibers can act as efficient solid acid catalysts in different organic reactions capable of being reused several times due to their easy separation by applying magnet.

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Pyrimidyl formamidine palladium(II) complex as a nanocatalyst for aqueous Suzuki-Miyaura coupling

Cited by 13 publications

References 54 publications

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

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

Benzothiazole-Based Palladium Complexes as Efficient Nano-Sized Catalysts for Microwave Hydrothermal Suzuki –Miyaura Cross-Couplings

The synthesis and characterization of Fe2O3@SiO2–SO3H nanofibers as a novel magnetic core-shell catalyst for formamidine and formamide synthesis

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