Problems of distinguishing the homogeneous and heterogeneous mechanisms of the Suzuki reaction

Schmidt, Alexander F.; Kurokhtina, A. A.; Svechkarev, A. N.; Смирнов, В. В.; Al-Halaiqa, A.

doi:10.1134/s0023158410010180

Cited by 3 publications

(3 citation statements)

References 43 publications

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“…Further support for the direct role of a heterogeneous active phase emerged in a recent kinetic investigation, wherein ultracentrifugation revealed Suzuki coupling of bromobenzene and phenylboronic acid in EtOH-H 2 O (mediated by NaOH at 22 • C) arose solely from nanosized Pd clusters. 42 Perhaps the most compelling evidence for surface-driven Suzuki coupling derives from an elegant experiment in which Davis and co-workers effected spatially controlled Suzuki and Heck crosscouplings of surface tethered aryl halides and styrene respectively via a PdNP coated AFM probe; such highly localised reaction is unexpected if coupling were indeed mediated via mobile, solubilised Pd species freely diffusing throughout the solvent media.…”

Section: Introductionmentioning

confidence: 99%

Surface catalysed Suzuki–Miyaura cross-coupling by Pd nanoparticles: an operando XAS study

et al. 2010

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Size-controlled, catalytically active PVP-stabilised Pd nanoparticles have been studied by operando liquid phase XAS during the Suzuki cross-coupling of iodonanisole and phenylboronic acid in MeOH-toluene using KOMe base. XAS reveals nanoparticles are stable to metal leaching throughout the reaction, with surface density Pd defect sites directly implicated in the catalytic cycle. The efficacy of popular selective chemical and structural poisons for distinguishing heterogeneous and homogeneous contributions in Pd catalysed cross-couplings is also explored.

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Section: Introductionmentioning

confidence: 99%

Surface catalysed Suzuki–Miyaura cross-coupling by Pd nanoparticles: an operando XAS study

et al. 2010

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“…Therefore, it is possible to conduct the above equifinal processes on catalymetric chips with platinum enthrakometers under conditions of specific acceleration by the microwave field. Reactions of the latter type may, in part, be described as autocatalytic, as the agglomeration mechanisms of the metal-catalyst involved in the remetallation (e.g., Pd), are autocatalytic and indifferent to the introduction of the additional amounts of catalyst (therefore there is no need to replace the enthrakometer) [183][184][185].…”

Section: Microwave Acceleration Of Chemical Reactions and Microwave Catalysismentioning

confidence: 99%

Microwave Enthrakometric Labs-On-A-Chip and On-Chip Enthrakometric Catalymetry: From Non-Conventional Chemotronics Towards Microwave-Assisted Chemosensors

Градов

Gradova

2019

Chemosensors

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A unique chemical analytical approach is proposed based on the integration of chemical radiophysics with electrochemistry at the catalytically-active surface. This approach includes integration of: radiofrequency modulation polarography with platinum electrodes, applied as film enthrakometers for microwave measurements; microwave thermal analysis performed on enthrakometers as bolometric sensors; catalytic measurements, including registration of chemical self-oscillations on the surface of a platinum enthrakometer as the chemosensor; measurements on the Pt chemosensor implemented as an electrochemical chip with the enthrakometer walls acting as the chip walls; chemotron measurements and data processing in real time on the surface of the enthrakometric chip; microwave electron paramagnetic resonance (EPR) measurements using an enthrakometer both as a substrate and a microwave power meter; microwave acceleration of chemical reactions and microwave catalysis оn the Pt surface; chemical generation of radio- and microwaves, and microwave spin catalysis; and magnetic isotope measurements on the enthrakometric chip. The above approach allows one to perform multiparametric physical and electrochemical sensing on a single active enthrakometric surface, combining the properties of the selective electrochemical sensor and an additive physical detector.

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“…This is mainly because the Pd ion complex formed by the oxidative addition reaction between BrPy and PdCl 2 increased the reactivity toward phenylboronic acid efficiently. 31,32 For Cu and Ni ion catalysts, it is difficult to generate the highly active reaction substance with BrPy for the subsequent reaction with phenylboronic acid. Based on the above facts, operando SERS plays an important role in the search of catalysts with high activities.…”

mentioning

confidence: 99%

Real-time visualization of the Suzuki reaction using surface enhanced Raman spectroscopy and a moveable magnetic nanoparticle film

Yin

Zhang

et al. 2022

Chem. Commun.

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Problems of distinguishing the homogeneous and heterogeneous mechanisms of the Suzuki reaction

Cited by 3 publications

References 43 publications

Surface catalysed Suzuki–Miyaura cross-coupling by Pd nanoparticles: an operando XAS study

Surface catalysed Suzuki–Miyaura cross-coupling by Pd nanoparticles: an operando XAS study

Microwave Enthrakometric Labs-On-A-Chip and On-Chip Enthrakometric Catalymetry: From Non-Conventional Chemotronics Towards Microwave-Assisted Chemosensors

Real-time visualization of the Suzuki reaction using surface enhanced Raman spectroscopy and a moveable magnetic nanoparticle film

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