Palladium supported on natural phosphate: Catalyst for Suzuki coupling reactions in water

Hassine, Ayoub; Sebti, Saı̈d M.; Solhy, Abderrahim; Zahouily, Mohamed; Len, Christophe; Hedhili, Mohamed N.; Fihri, Aziz

doi:10.1016/j.apcata.2012.09.046

Cited by 47 publications

(28 citation statements)

References 58 publications

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“…SEM images of NP show that there are porosity and a heterogeneous microstructure. The results are in good agreement with the earlier studies [3,9]. The average particle diameters were measured at around 10-14 and 20-22 lm.…”

Section: Catalyst Characterizationsupporting

confidence: 87%

“…1) shows strong peaks at: 1092, 1044, 600, 576 and 473 cm -1 , which could be referred to vibrational modes of P-O, P-O-P bands in PO 4 3-groups of the apatite structure [41,42] similar to natural fluorapatite of Morocco [9] and Tunisia [43].…”

Section: Catalyst Characterizationmentioning

confidence: 99%

“…NP and synthetic phosphates such as fluorapatite (FAP, Ca 10 (PO 4 ) 6 F 2 ) or hydroxyapatite (HAP, Ca 10 (PO 4 ) 6 (OH) 2 ) [3] were used as efficient catalysts for various organic transformations, e.g. Knoevenagel condensation [4], transesterification reaction [5], Michael addition of mercaptans to a,b-unsaturated carbonyl compounds [6], synthesis of 5-arylhydantoins [7], a-hydroxyphosphonates [8], and Suzuki coupling reactions [9].…”

Section: Introductionmentioning

confidence: 99%

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Natural phosphate as an efficient and green catalyst for synthesis of tetraketone and xanthene derivatives

et al. 2016

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Natural phosphate was applied as an efficient and ecofriendly catalyst for the synthesis of tetraketones (2-2.5 h, 90-100 %) and xanthenes (6.5-8.5 h, 84-95 %) via Knoevenagel-Michael cascade reaction of aromatic aldehydes with 1,3-cyclic diketones in water and ethanol, respectively. This protocol provides several advantages over the traditional chemical synthesis, such as simple work-up, easy handling procedure, nontoxicity and stability of catalyst, low cost and environmental friendliness. Graphical Abstract& Mahmood Tajbakhsh

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Section: Catalyst Characterizationsupporting

confidence: 87%

Section: Catalyst Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Natural phosphate as an efficient and green catalyst for synthesis of tetraketone and xanthene derivatives

et al. 2016

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“…[174][175][176][177][178][179][180] Under this purview, Wu et al 181 thought to design carbohydrate-based compounds capable to exhibit hydrogen bonding interactions for possible organocatalysts to activate organic reaction in water. The present investigators reported for the first-time that carbohydrate-based tolylsulfonyl hydrazines can effectively accomplish Michael addition of indoles (65) to electron-deficient olefins (66) in water just at room temperature (Scheme 24). This method provides a green process for the synthesis of biologically relevant 3-substituted indole derivatives 68 under mild conditions with high yield and with good substrate scope.…”

Section: Michael Additionmentioning

confidence: 93%

Design for carbon–carbon bond forming reactions under ambient conditions

Brahmachari

2016

RSC Adv.

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Carbon-carbon (C-C) bond forms the 'backbone' of nearly every organic molecule, and lies at the heart of the chemical sciences! This transformation has always been one of the most useful and fundamental reactions in the development of organic chemistry. Currently, the concept of 'green chemistry' is globally acclaimed and has already advanced quite significantly to come out as a distinct branch of chemical sciences. Among the principles of 'green chemistry', one principle is dedicated to "design of energy efficiency" -that is to develop synthetic strategies that require less/minimum amount of energy to carry out a specific reaction with optimum productivity. And the most effective way-out to save energy is to develop strategies/protocols that are capable enough to carry out the transformations at ambient temperature and pressure! As part of on-going developments on green synthetic strategies, designing for reactions under ambient conditions coupled with other green aspects is, thus, an area of current choice. This review is aimed to offer an up-to-date development on the design of carbon-carbon bond forming protocols to access a wide variety of organic molecules of topical significance under ambient conditions. The account highlights on the brilliant applications of reaction conditions such as the use of solvents or no solvent, catalysts or no catalyst, and the use of green tools like ball-milling, ultrasonication and visible light in achieving the goal! Design for Carbon Carbon Frameworks at Ambient ConditionsN Me Me Me O O COOH Br Br (Graphic for TOC)

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“…In the context of green chemistry, catalysis and alternative media, different cross-coupling reactions such as Suzuki-Miyaura in batch reactors have been developed in aqueous media or in water as sole green safer solvent via conventional heating or microwave irradiation [32][33][34][35][36][37][38][39][40][41][42][43]. Continuous flow chemistry as alternative technology offers significant processing advantages including improved thermal management, mixing control, application to a wider range of reaction conditions, scalability, energy efficiency, waste reduction, safety, use of heterogeneous catalysis, multistep synthesis and much more [44][45][46][47][48][49].…”

Section: Introductionmentioning

confidence: 99%

Palladium-Catalyzed Suzuki–Miyaura Cross-Coupling in Continuous Flow

et al. 2017

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Carbon-carbon cross-coupling reactions are among the most important processes in organic chemistry and Suzuki-Miyaura reactions are the most widely used protocols. For a decade, green chemistry and particularly catalysis and continuous flow, have shown immense potential in achieving the goals of "greener synthesis". To date, it seems difficult to conceive the chemistry of the 21st century without the industrialization of continuous flow process in the area of pharmaceuticals, drugs, agrochemicals, polymers, etc. A large variety of palladium Suzuki-Miyaura cross-coupling reactions have been developed using a continuous flow sequence for preparing the desired biaryl derivatives. Our objective is to focus this review on the continuous flow Suzuki-Miyaura cross-coupling using homogeneous and heterogeneous catalysts.

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Palladium supported on natural phosphate: Catalyst for Suzuki coupling reactions in water

Cited by 47 publications

References 58 publications

Natural phosphate as an efficient and green catalyst for synthesis of tetraketone and xanthene derivatives

Natural phosphate as an efficient and green catalyst for synthesis of tetraketone and xanthene derivatives

Design for carbon–carbon bond forming reactions under ambient conditions

Palladium-Catalyzed Suzuki–Miyaura Cross-Coupling in Continuous Flow

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