Enhanced Catalytic Performance of Indenediide Palladium Pincer Complexes for Cycloisomerization: Efficient Synthesis of Alkylidene Lactams

ACS Catalysis ◽  
2014 ◽  
Vol 4 (10) ◽  
pp. 3605-3611 ◽  
Author(s):  
Noel Ángel Espinosa-Jalapa ◽  
Diandian Ke ◽  
Noel Nebra ◽  
Lucas Le Goanvic ◽  
Sonia Mallet-Ladeira ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Pincer Complexes ◽  
Efficient Synthesis

scholarly journals Correction to Enhanced Catalytic Performance of Indenediide Palladium Pincer Complexes for Cycloisomerization: Efficient Synthesis of Alkylidene Lactams

ACS Catalysis ◽  
2016 ◽  
Vol 6 (3) ◽  
pp. 1565-1566 ◽  
Author(s):  
Noel Ángel Espinosa-Jalapa ◽  
Diandian Ke ◽  
Noel Nebra ◽  
Lucas Le Goanvic ◽  
Sonia Mallet-Ladeira ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Pincer Complexes ◽  
Efficient Synthesis

scholarly journals Robust and efficient hydrogenation of carbonyl compounds catalysed by mixed donor Mn(I) pincer complexes

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Wenjun Yang ◽  
Ivan Yu. Chernyshov ◽  
Robin K. A. van Schendel ◽  
Manuela Weber ◽  
Christian Müller ◽  
...  
Keyword(s):  
Noble Metal ◽  
Crucial Role ◽  
Carbonyl Compounds ◽  
Catalytic Performance ◽  
Hydrogen Atmosphere ◽  
Pincer Complexes ◽  
Catalyst Activation ◽  
Hydrogenation Catalysts ◽  
Induction Times

AbstractAny catalyst should be efficient and stable to be implemented in practice. This requirement is particularly valid for manganese hydrogenation catalysts. While representing a more sustainable alternative to conventional noble metal-based systems, manganese hydrogenation catalysts are prone to degrade under catalytic conditions once operation temperatures are high. Herein, we report a highly efficient Mn(I)-CNP pre-catalyst which gives rise to the excellent productivity (TOF° up to 41 000 h−1) and stability (TON up to 200 000) in hydrogenation catalysis. This system enables near-quantitative hydrogenation of ketones, imines, aldehydes and formate esters at the catalyst loadings as low as 5–200 p.p.m. Our analysis points to the crucial role of the catalyst activation step for the catalytic performance and stability of the system. While conventional activation employing alkoxide bases can ultimately provide catalytically competent species under hydrogen atmosphere, activation of Mn(I) pre-catalyst with hydride donor promoters, e.g. KHBEt3, dramatically improves catalytic performance of the system and eliminates induction times associated with slow catalyst activation.

scholarly journals A case study of proton shuttling in palladium catalysis

2016 ◽  
Vol 7 (3) ◽  
pp. 2179-2187 ◽  
Author(s):  
Julien Monot ◽  
Paul Brunel ◽  
Christos E. Kefalidis ◽  
Noel Ángel Espinosa-Jalapa ◽  
Laurent Maron ◽  
...  
Keyword(s):  
Palladium Catalysis ◽  
Catalytic Performance ◽  
Pincer Complexes ◽  
Mechanistic Studies ◽  
Proton Shuttling

Thanks to mechanistic studies, the catalytic performance of SCS indenediide Pd pincer complexes has been spectacularly enhanced using catechol additives as proton shuttles.

ChemInform Abstract: Catalytic Performance of Symmetrical and Unsymmetrical Sulfur-Containing Pincer Complexes: Synthesis and Tandem Catalytic Activity of the First PCS-Pincer Palladium Complex.

ChemInform ◽  
2008 ◽  
Vol 39 (40) ◽  
Author(s):  
Marcella Gagliardo ◽  
Nicklas Selander ◽  
Nilesh C. Mehendale ◽  
Gerard van Koten ◽  
Robertus J. M. Klein Gebbink ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Palladium Complex ◽  
Catalytic Performance ◽  
Pincer Complexes ◽  
Sulfur Containing

scholarly journals Theoretical Study on CO2 Hydrogenation Mediated by Ru-PNP Pincer Complexes: An Implication Towards Rational Catalyst Design

2021 ◽  
Author(s):  
Shahnaz Rohman ◽  
Chayanika Kashyap ◽  
Amlan Kalita ◽  
Sabnam Ullah ◽  
Indrani Baruah ◽  
...  
Keyword(s):  
Density Functional ◽  
Activation Barrier ◽  
Co2 Reduction ◽  
Catalytic Efficiency ◽  
Catalytic Performance ◽  
Catalyst Design ◽  
Pincer Complexes ◽  
Functional Theory ◽  
Strain Model ◽  
Rational Catalyst Design

Catalytic CO2 reduction mediated by Ru-PNP pincer complexes has been studied using density functional theory (DFT). Calculations clearly reveal that modification of the PNP pincer framework by introducing planar conjugation in the backbone improves the catalytic efficiency. Activation strain model reveals that reduction of strain in the transition states with modified PNP framework associated with the insertion of CO2 molecule is responsible for lowering the activation barrier. Calculations also reveal that electron withdrawing substituents at the PNP ligand improves the catalytic performance.

scholarly journals Bisimino-functionalized dibenzo[a,c]acridines as highly conjugated pincer frameworks for palladium(ii): synthesis, characterization and catalytic performance in Heck coupling

2016 ◽  
Vol 3 (12) ◽  
pp. 1668-1679 ◽  
Author(s):  
Qaiser Mahmood ◽  
Erlin Yue ◽  
Wenjuan Zhang ◽  
Gregory A. Solan ◽  
Tongling Liang ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Pincer Complexes ◽  
Heck Coupling

The NNC-Pd pincer complexes, systematically derived from phenanthrene-9,10-dione, are able to efficiently mediate the coupling of haloarenes with vinyl-containing substrates (up to TON = 174 000) with a broad substrate scope.

Hybrid Thiophosphoryl–Benzothiazole Palladium SCN-Pincer Complexes: Synthesis and Effect of Structure Modifications on Catalytic Performance in the Suzuki Cross-Coupling

2011 ◽  
Vol 30 (11) ◽  
pp. 2920-2932 ◽  
Author(s):  
Vladimir A. Kozlov ◽  
Diana V. Aleksanyan ◽  
Yulia V. Nelyubina ◽  
Konstantin A. Lyssenko ◽  
Pavel V. Petrovskii ◽  
...  
Keyword(s):  
Cross Coupling ◽  
Catalytic Performance ◽  
Pincer Complexes ◽  
Effect Of Structure

A Green and Efficient Synthesis of 9-Aryl-3,4,5,6,7,9-hexahydroxanthene-1,8-dione using a Task-Specific Ionic Liquid as Dual Catalyst and Solvent

2007 ◽  
Vol 60 (2) ◽  
pp. 146 ◽  
Author(s):  
Jingjun Ma ◽  
Xin Zhou ◽  
Xiaohuan Zang ◽  
Chun Wang ◽  
Zhi Wang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Efficient Method ◽  
Reaction Medium ◽  
Catalytic Performance ◽  
Efficient Synthesis ◽  
Counter Anion ◽  
Task Specific Ionic Liquid

A green and efficient method for the preparation of 9-aryl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione has been developed using functionalized ionic liquids as a catalyst and a reaction medium. The nature of both the counter anion and cation influence the catalytic performance of the ionic liquids. The ionic liquid can be recycled and reused without apparently loss of activity.

Sign in / Sign up

Export Citation Format

Share Document