Increased Catalytic Activity of Surface-Immobilized Palladium Complexes in the Fluorogenic Deprotection of an Alloc-Derivatized Coumarin

2011 ◽  
Vol 18 (3) ◽  
pp. 788-792 ◽  
Author(s):  
Antony Fernandes ◽  
Peter Hensenne ◽  
Bertrand Mathy ◽  
Weiming Guo ◽  
Bernard Nysten ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Palladium Complexes

Catalytic activity of chelating N-heterocyclic carbene palladium complexes towards selective phosphorylation of coumarins

2016 ◽  
Vol 818 ◽  
pp. 179-184 ◽  
Author(s):  
Liangru Yang ◽  
Xinchi Zhang ◽  
Jinwei Yuan ◽  
Yongmei Xiao ◽  
Pu Mao
Keyword(s):  
Catalytic Activity ◽  
Palladium Complexes

Homogeneous versus Supported ONN Pincer-Type Gold and Palladium Complexes: Catalytic Activity

ChemSusChem ◽  
2009 ◽  
Vol 2 (7) ◽  
pp. 650-657 ◽  
Author(s):  
Carolina del Pozo ◽  
Nathalie Debono ◽  
Avelino Corma ◽  
Marta Iglesias ◽  
Félix Sánchez
Keyword(s):  
Catalytic Activity ◽  
Palladium Complexes

Synthesis of sterically hindered N -benzyladamantyl substituted benzimidazol-2-ylidene palladium complexes and investigation of their catalytic activity in aqueous medium

Tetrahedron ◽  
2017 ◽  
Vol 73 (40) ◽  
pp. 5940-5945 ◽  
Author(s):  
Zineb Imene Dehimat ◽  
Aziz Paşahan ◽  
Dahmane Tebbani ◽  
Sedat Yaşar ◽  
İsmail Özdemir
Keyword(s):  
Catalytic Activity ◽  
Aqueous Medium ◽  
Palladium Complexes ◽  
Sterically Hindered

scholarly journals Amine-Catalysed Suzuki–Miyaura-Type Coupling? the Identification and Isolation of the Palladium Culprits.

2021 ◽  
Author(s):  
Mickaël Avanthay ◽  
Robin Bedford ◽  
Callum Begg ◽  
Dietrich Böse ◽  
Jonathan Clayden ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Cross Coupling ◽  
Boronic Acids ◽  
Palladium Complexes ◽  
Aryl Halides ◽  
Type Coupling ◽  
Paradigm Shifting

A recent report in Nature Catalysis detailed the potentially paradigm-shifting organocatalysis of Suzuki cross-coupling of aryl halides with aryl boronic acids, catalysed by simple amine species. We have conducted a reinvestigation of key claims in this paper across multiple academic and industrial laboratories that shows that the observed catalytic activity cannot be due to the amine, but rather is due to tricyclohexylphosphine palladium complexes that are readily entrained during the purification of the amine<b>.</b>

scholarly journals Polystyrene-Supported Acyclic Diaminocarbene Palladium Complexes in Sonogashira Cross-Coupling: Stability vs. Catalytic Activity

Catalysts ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 141 ◽  
Author(s):  
Vladimir Mikhaylov ◽  
Viktor Sorokoumov ◽  
Denis Liakhov ◽  
Alexander Tskhovrebov ◽  
Irina Balova
Keyword(s):  
Catalytic Activity ◽  
High Activity ◽  
Cross Coupling ◽  
Palladium Complexes ◽  
Lower Activity ◽  
Coupling Conditions ◽  
Acyclic Diaminocarbene ◽  
Supported Palladium ◽  
Polymer Supported

Two types of immobilized on the amino-functionalized polystyrene-supported acyclic diaminocarbene palladium complexes (ADC-PdII) are investigated under Sonogashira cross-coupling conditions. Depending on substituents in the diaminocarbene fragment immobilized ADC-PdII, systems are found to have different catalytic activity and stability regarding Pd-leaching. PdII-diaminocarbenes possessing protons at both nitrogen atoms smoothly decompose into Pd0-containing species providing a catalytic “cocktail system” with high activity and ability to reuse within nine runs. Polymer-supported palladium (II) complex bearing NBn–Ccarbene–NH-moiety exhibits greater stability while noticeably lower activity under Sonogashira cross-coupling. Four molecular ADC-PdII complexes are also synthesized and investigated with the aim of confirming proposed base-promoted pathway of ADC-PdII conversion through carbodiimide into an active Pd0 forms.

Synthesis, characterization, and catalytic activity of (1,2-Diaryl)alkenylphosphine palladium complexes

Polyhedron ◽  
2013 ◽  
Vol 52 ◽  
pp. 1323-1328 ◽  
Author(s):  
Chanjuan Xi ◽  
Bingran Yu ◽  
Xiaoyu Yan ◽  
Ning Tang
Keyword(s):  
Catalytic Activity ◽  
Palladium Complexes

Catalytic activity of palladium complexes with stable diaminocarbenes containing five-, six- and seven-membered rings in the Suzuki-Miyaura reaction

2014 ◽  
Vol 63 (4) ◽  
pp. 890-894 ◽  
Author(s):  
P. B. Dzhevakov ◽  
A. F. Asachenko ◽  
A. N. Kashin ◽  
I. P. Beletskaya ◽  
M. S. Nechaev
Keyword(s):  
Catalytic Activity ◽  
Palladium Complexes
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