The use of palladium nanoparticles supported with MCM-41 and basic (Al)MCM-41 mesoporous sieves in microwave-assisted Heck reaction

Finding environmentally gentle methods to graft Lewis acid on the surface of mesoporous materials is a topic of current interest. Herein we describe the optimization of a preparation procedure of a mesoporous silica-supported ErIII catalyst using the microwave-assisted post-calcination functionalization of Mobil Composition of Matter-41 silica as the key step. The required time for functionalization was reduced from several hours to 10 min using sealed-vessel microwave technology. Control experiments using conventional heating at the same temperature demonstrated that the rate increase is owing to a simple thermal/kinetic effect as a result of the higher reaction temperature. The resulting ErIII catalyst was tested for the first time as a catalyst in the continuous flow deprotection of benzaldehyde dimethylacetal and a complete leaching study was performed.

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A Practical Route to a Complex Bis-Steroidal Diene Intermediate Using a Microwave Assisted Heck-Reaction

Synthesis ◽

10.1055/s-2002-33118 ◽

2002 ◽

pp. 1373-1378 ◽

Cited By ~ 1

Author(s):

E. Winterfeldt ◽

T. Flessner ◽

V. Ludwig ◽

H. Siebeneicher

Keyword(s):

Heck Reaction ◽

Microwave Assisted

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Magnetically recoverable nanostructured Pd complex of dendrimeric type ligand on the MCM-41: Preparation, characterization and catalytic activity in the Heck reaction

Main Group Metal Chemistry ◽

10.1515/mgmc-2020-0023 ◽

2020 ◽

Vol 43 (1) ◽

pp. 184-199

Author(s):

Mohammad Abdollahi-Alibeik ◽

Najmeh Gharibpour ◽

Zahra Ramazani

Keyword(s):

Heck Reaction ◽

Palladium Complex ◽

Nanostructured Material ◽

Magnetic Core ◽

Aryl Halides ◽

Heterogeneous Samples ◽

Recoverable Catalyst ◽

Ft Ir ◽

Magnetically Recoverable Catalyst ◽

Mcm 41

AbstractA palladium complex of a dendrimer type ligand of aminoethylacrylamide immobilized onto the mesoporous channels of MCM-41 with magnetic core was prepared and characterized using various techniques such as XRD, TEM, BET, FT-IR, TGA, and VSM. The prepared nanostructured material was found as a magnetically recoverable catalyst for Heck reaction of aryl halides and vinylic C–H. The catalyst is easily recoverable with an external magnet and is reusable with different leaching amounts depending to loading of Pd. A hot filtration test was also performed and gave evidence that Palladium in heterogeneous samples can dissolve and then redeposit on the surface of the support material.

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Investigation of microwave‐assisted synthesis of palladium nanoparticles supported on Fe 3 O 4 as efficient recyclable magnetic catalysts for Suzuki‐Miyaura cross‐coupling

The Canadian Journal of Chemical Engineering ◽

10.1002/cjce.23402 ◽

2019 ◽

Vol 97 (S1) ◽

pp. 1545-1551 ◽

Cited By ~ 1

Author(s):

Hany A. Elazab

Keyword(s):

Palladium Nanoparticles ◽

Cross Coupling ◽

Microwave Assisted Synthesis ◽

Microwave Assisted

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Palladium chloride catalyzed photochemical Heck reaction

Canadian Journal of Chemistry ◽

10.1139/cjc-2012-0377 ◽

2013 ◽

Vol 91 (5) ◽

pp. 348-351 ◽

Cited By ~ 5

Author(s):

Suresh B. Waghmode ◽

Sudhir S. Arbuj ◽

Bina N. Wani ◽

C.S. Gopinath

Keyword(s):

Visible Light ◽

Heck Reaction ◽

Palladium Nanoparticles ◽

Bond Formation ◽

Aryl Halides ◽

Palladium Chloride ◽

Carbon Bond ◽

Excellent Yield ◽

Carbon Carbon Bond ◽

Uv Visible

PdCl2 catalyzed carbon–carbon bond formation (Heck reaction) between substituted aryl halides and olefins was carried out without a ligand, under irradiation with UV–visible light. The results demonstrated that UV–visible light accelerated the rate of the reaction, leading to an excellent yield of corresponding products. The recovered palladium nanoparticles could be thermally recycled several times. PdCl2 gave excellent conversion up to the fifth addition of substrate.

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