Results 91 to 100 of about 5,572 (222)

A domino reaction for generating β-aryl aldehydes from alkynes by substrate recognition catalysis

open access: yesNature Communications, 2019
Supramolecular interactions may be responsible for higher degree of efficiency and selectivity in homogeneous catalysis. Here, the authors exploit the concept of supramolecular catalysis to develop a domino rhodium-catalyzed hydroformylation of α ...
Weiwei Fang   +3 more
doaj   +1 more source

Kinetic analysis of homogeneous catalytic reactions

open access: yes, 2012
Reaction progress kinetic analysis (RPKA) is a powerful tool for determining kinetic parameters of catalytic reactions. Many of the published articles that have used RPKA have employed reaction calorimetry for obtaining sufficient data to be reliable ...
Robb, Lynzi M.
core  

Bio-inspired creation of heterogeneous reaction vessels via polymerization of supramolecular ion pair

open access: yesNature Communications, 2019
Tuning the environment of catalytic active sites may improve the selectivity of heterogeneous catalysts. Here, the authors modify the outer-sphere environment of active sites in hydroformylation catalysts by encapsulating the active sites in nanovessels ...
Ke Dong   +8 more
doaj   +1 more source

The Hydroformylation of 2-Pentene-5,5,5-d3

open access: yesCHIMIA, 1974
In the title reaction, at low pCO (5 at), rapid isomerisation of the substrate occurs and a random distribution of deuterium in the reaction products has been found.
Denis A. von Bézard   +2 more
doaj   +1 more source

Asymmetric hydroformylation of olefins catalyzed by rhodium nanoparticles chirally stabilized with (R)-BINAP ligand

open access: yes, 2008
Rhodium nanoparticles have been conveniently synthesized by one-pot chemical reduction of aqueous rhodium chloride (RhCl3.3H(2)O) dispersed in toluene solution in the presence of amphiphilic tetraoctylammonium bromide (TOAB) and chiral (R)-BINAP at ...
Li, Xiaohong   +6 more
core   +1 more source

Phosphinocyclodextrins as confining units for catalytic metal centres. Applications to carbon–carbon bond forming reactions

open access: yesBeilstein Journal of Organic Chemistry, 2014
The capacity of two cavity-shaped ligands, HUGPHOS-1 and HUGPHOS-2, to generate exclusively singly phosphorus-ligated complexes, in which the cyclodextrin cavity tightly wraps around the metal centre, was explored with a number of late transition metal ...
Matthieu Jouffroy   +6 more
doaj   +1 more source

From Poison to Promotor: Spatially Isolated Metal Sites in Supported Rhodium Sulfides as Hydroformylation Catalysts

open access: yesSmall Structures
The hydroformylation of alkenes is a cornerstone transformation for the chemical industry, central for both functionalizing and extending the carbon backbone of an alkene.
Arjun Neyyathala   +7 more
doaj   +1 more source

Study on catalysts and reaction process for highly selective hydroformylation of 1-octene

open access: yes上海师范大学学报. 自然科学版
Using rhodium dicarbonylacetylacetonate as the rhodium(Rh) catalyst precursor, the catalytic performances of different monodentate and bidentate phosphine ligands, bisphosphite ligands, and the self-synthesized ligand system Rh-L9 were investigated in ...
YANG Xushi   +5 more
doaj   +1 more source

Formation of 3-pentanone via ethylene hydroformylation over Coactivated carbon catalyst

open access: yes, 2013
Formation of 3-pentanone via ethylene hydroformylation over Coactivated carbon ...
斐彦鹏   +7 more
core  

Synthesis of (–)-Indolizidine 167B based on domino hydroformylation/cyclization reactions

open access: yesBeilstein Journal of Organic Chemistry, 2008
The synthesis of (–)-Indolizidine 167B has been achieved from optically active (R)-3-(pyrrol-1-yl)hex-1-ene. The key step is a highly regioselective hydroformylation reaction and a one-pot intramolecular cyclization providing a general approach to the ...
Giuditta Guazzelli   +2 more
doaj   +1 more source

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