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

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.

Synthesis of MCM-41 supported amino-palladium complex and its catalytic performance for heck reaction

2009 ◽  
Vol 4 (2) ◽  
pp. 142-148 ◽  
Author(s):  
Jianmin Zhou ◽  
Yulin Yang ◽  
Lan Zhao ◽  
Xiaokun Li ◽  
Renxian Zhou ◽  
...  
Keyword(s):  
Heck Reaction ◽  
Palladium Complex ◽  
Catalytic Performance ◽  
Mcm 41

Zn(ii) anchored onto the magnetic natural hydroxyapatite (ZnII/HAP/Fe3O4): as a novel, green and recyclable catalyst for A3-coupling reaction towards propargylamine synthesis under solvent-free conditions

RSC Advances ◽  
2016 ◽  
Vol 6 (108) ◽  
pp. 106473-106484 ◽  
Author(s):  
Zeinab Zarei ◽  
Batool Akhlaghinia
Keyword(s):  
Coupling Reaction ◽  
Recyclable Catalyst ◽  
Solvent Free ◽  
Recoverable Catalyst ◽  
Solvent Free Conditions ◽  
Ft Ir ◽  
Magnetically Recoverable Catalyst ◽  
A3 Coupling ◽  
Natural Hydroxyapatite

In this paper, Zn(ii) anchored onto the magnetic natural hydroxyapatite (ZnII/HAP/Fe3O4), as a new and magnetically recoverable catalyst, was prepared and characterized using different techniques such as FT-IR, XRD, TGA, TEM, EDX, VSM and ICP.

scholarly journals Palladium(II)-catalyzed Heck reaction of aryl halides and arylboronic acids with olefins under mild conditions

2013 ◽  
Vol 9 ◽  
pp. 1578-1588 ◽  
Author(s):  
Tanveer Mahamadali Shaikh ◽  
Fung-E Hong
Keyword(s):  
Heck Reaction ◽  
Palladium Complex ◽  
Aryl Halides ◽  
Ambient Conditions ◽  
Heck Reactions ◽  
Reaction Conditions ◽  
Arylboronic Acids ◽  
Mild Conditions ◽  
Pd Complexes ◽  
High Yields

A series of general and selective Pd(II)-catalyzed Heck reactions were investigated under mild reaction conditions. The first protocol has been developed employing an imidazole-based secondary phosphine oxide (SPO) ligated palladium complex (6) as a precatalyst. The catalytic coupling of aryl halides and olefins led to the formation of the corresponding coupled products in excellent yields. A variety of substrates, both electron-rich and electron-poor olefins, were converted smoothly to the targeted products in high yields. Compared with the existing approaches employing SPO–Pd complexes in a Heck reaction, the current strategy features mild reaction conditions and broad substrate scope. Furthermore, we described the coupling of arylboronic acids with olefins, which were catalyzed by Pd(OAc)2 and employed N-bromosuccinimide as an additive under ambient conditions. The resulted biaryls have been obtained in moderate to good yields.

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