Hydrocarbon oxidation catalyzed by a cheap nonheme imine-based iron(ii) complex

2014 ◽  
Vol 4 (9) ◽  
pp. 2900-2903 ◽  
Author(s):  
Giorgio Olivo ◽  
Giorgio Arancio ◽  
Luigi Mandolini ◽  
Osvaldo Lanzalunga ◽  
Stefano Di Stefano
Keyword(s):  
Iron Complex ◽  
Hydrocarbon Oxidation

An imine-based iron complex, prepared in situ from iron(ii), pyridine-2-carbaldehyde and 2-aminomethylpyridine, effectively catalyzes hydrocarbon oxidation at low loadings.

scholarly journals Insertion of Phosphenium Ions into a Bicyclo[1.1.0]Tetraphosphabutane Iron Complex

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3920
Author(s):  
Martin Weber ◽  
Gábor Balázs ◽  
Alexander V. Virovets ◽  
Eugenia Peresypkina ◽  
Manfred Scheer
Keyword(s):  
Diffraction Analysis ◽  
Room Temperature ◽  
31P Nmr ◽  
Spectroscopic Studies ◽  
Iron Complex ◽  
The Novel ◽  
X Ray Diffraction ◽  
X Ray ◽  
Phosphenium Ions

By reacting [{Cp‴Fe(CO)2}2(µ,η1:1-P4)] (1) with in situ generated phosphenium ions [Ph2P][A] ([A]− = [OTf]− = [O3SCF3]−, [PF6]−), a mixture of two main products of the composition [{Cp‴Fe(CO)2}2(µ,η1:1-P5(C6H5)2)][PF6] (2a and 3a) could be identified by extensive 31P NMR spectroscopic studies at 193 K. Compound 3a was also characterized by X-ray diffraction analysis, showing the rarely observed bicyclo[2.1.0]pentaphosphapentane unit. At room temperature, the novel compound [{Cp‴Fe}(µ,η4:1-P5Ph2){Cp‴(CO)2Fe}][PF6] (4) is formed by decarbonylation. Reacting 1 with in situ generated diphenyl arsenium ions gives short-lived intermediates at 193 K which disproportionate at room temperature into tetraphenyldiarsine and [{Cp‴Fe(CO)2}4(µ4,η1:1:1:1-P8)][OTf]2 (5) containing a tetracyclo[3.3.0.02,7.03,6]octaphosphaoctane ligand.

scholarly journals Enantioselective Iron/Bisquinolyldiamine Ligand-Catalyzed Oxidative Coupling Reaction of 2-Naphthols

Molecules ◽  
2020 ◽  
Vol 25 (4) ◽  
pp. 852 ◽  
Author(s):  
Lin-Yang Wu ◽  
Muhammad Usman ◽  
Wen-Bo Liu
Keyword(s):  
Oxidative Coupling ◽  
Coupling Reaction ◽  
Iron Complex ◽  
Coupling Reactions ◽  
Oxidative Coupling Reaction ◽  
Oxidative Coupling Reactions

An iron-catalyzed asymmetric oxidative homo-coupling of 2-naphthols for the synthesis of 1,1′-Bi-2-naphthol (BINOL) derivatives is reported. The coupling reaction provides enantioenriched BINOLs in good yields (up to 99%) and moderate enantioselectivities (up to 81:19 er) using an iron-complex generated in situ from Fe(ClO4)2 and a bisquinolyldiamine ligand [(1R,2R)-N1,N2-di(quinolin-8-yl)cyclohexane-1,2-diamine, L1]. A number of ligands (L2–L8) and the analogs of L1, with various substituents and chiral backbones, were synthesized and examined in the oxidative coupling reactions.

scholarly journals Light element variations within the different age-metallicity populations in the nucleus of the Sagittarius dwarf

2019 ◽  
Vol 490 (1) ◽  
pp. L67-L70 ◽  
Author(s):  
Alison Sills ◽  
Emanuele Dalessandro ◽  
Mario Cadelano ◽  
Mayte Alfaro-Cuello ◽  
J M Diederik Kruijssen
Keyword(s):  
Star Formation ◽  
Globular Clusters ◽  
Star Clusters ◽  
Light Element ◽  
Iron Complex ◽  
Star Cluster ◽  
Chromosome Maps ◽  
Insight Into ◽  
Poor Population

ABSTRACT The cluster M54 lies at the centre of the Sagittarius dwarf spheroidal galaxy, and therefore may be the closest example of a nuclear star cluster. Either in situ star formation, inspiralling globular clusters, or a combination have been invoked to explain the wide variety of stellar sub-populations in nuclear star clusters. Globular clusters are known to exhibit light element variations, which can be identified using the photometric construct called a chromosome map. In this letter, we create chromosome maps for three distinct age-metallicity sub-populations in the vicinity of M54. We find that the old, metal-poor population shows the signature of light element variations, while the young and intermediate-age metal rich populations do not. We conclude that the nucleus of Sagittarius formed through a combination of in situ star formation and globular cluster accretion. This letter demonstrates that properly constructed chromosome maps of iron-complex globular clusters can provide insight into the formation locations of the different stellar populations.

Catalytic hydrocarbon oxidation by iron complex of 5,10,15-tris(difluorophenyl)corrole via activation of hydroperoxides

2013 ◽  
Vol 32 ◽  
pp. 23-27 ◽  
Author(s):  
Anand Pariyar ◽  
Suranjana Bose ◽  
Achintesh Narayan Biswas ◽  
Purak Das ◽  
Pinaki Bandyopadhyay
Keyword(s):  
Iron Complex ◽  
Hydrocarbon Oxidation

Knölker’s Iron Complex: An Efficient In Situ Generated Catalyst for Reductive Amination of Alkyl Aldehydes and Amines

2012 ◽  
Vol 51 (20) ◽  
pp. 4976-4980 ◽  
Author(s):  
Anastassiya Pagnoux-Ozherelyeva ◽  
Nicolas Pannetier ◽  
Mbaye Diagne Mbaye ◽  
Sylvain Gaillard ◽  
Jean-Luc Renaud
Keyword(s):  
Reductive Amination ◽  
Iron Complex

ChemInform Abstract: Highly Efficient and Practical Hydrogenation of Olefins Catalyzed by in situ Generated Iron Complex Catalysts.

ChemInform ◽  
2015 ◽  
Vol 46 (38) ◽  
pp. no-no
Author(s):  
Na Guo ◽  
Meng-Yang Hu ◽  
Ye Feng ◽  
Shou-Fei Zhu
Keyword(s):  
Iron Complex ◽  
Highly Efficient

scholarly journals Towards an atomistic understanding of electrocatalytic partial hydrocarbon oxidation: propene on palladium

2019 ◽  
Vol 12 (3) ◽  
pp. 1055-1067 ◽  
Author(s):  
Anna Winiwarter ◽  
Luca Silvioli ◽  
Soren B. Scott ◽  
Kasper Enemark-Rasmussen ◽  
Manuel Sariç ◽  
...  
Keyword(s):  
Catalyst Surface ◽  
Allylic Oxidation ◽  
Hydrocarbon Oxidation ◽  
High Coverage

High coverage of the catalyst surface generated by in situ degradation of propene steers the reaction towards allylic oxidation.

Simultaneous Determination of Phosphorus, Iron, and Aluminum in Phosphate Rock and Fertilizer Systems by Automated Colorimetric Analysis

1969 ◽  
Vol 52 (6) ◽  
pp. 1121-1126
Author(s):  
Jack L Hoyt ◽  
Donald E Jordan
Keyword(s):  
Phosphate Rock ◽  
Colorimetric Method ◽  
Iron Complex ◽  
Colorimetric Analysis ◽  
Splitting Technique ◽  
Phosphorus Iron ◽  
Effective Analysis ◽  
Better Than

Abstract An automated colorimetric method is used to simultaneously determine phosphorus, iron, and aluminum in phosphate rock and various solid and liquid fertilizer systems. Combination of an in situ dilution technique for phosphorus with a sample splitting technique results in an effective analysis rate of 60, 90, or 120 determinations/hr (20, 30, or 40 samples/hr, 3 elements/sample). Phosphorus is determined as the molybdovanadophosphate complex at 420 mμ; iron and aluminum are both determinated as “Ferron” (8-hydroxy-7-iodo-5-quinoline sulfonic acid) complexes with the iron complex determined at 610 mμ and combined iron and aluminum complexes determined at 366 mμ. The precision and accuracy are better than ±1% relative throughout the total range of 0.1 to 75% P2O5, and up to 10% Fe2O3 and 10% AL2O3.

Knölker’s Iron Complex: An Efficient In Situ Generated Catalyst for Reductive Amination of Alkyl Aldehydes and Amines

2012 ◽  
Vol 124 (20) ◽  
pp. 5060-5064 ◽  
Author(s):  
Anastassiya Pagnoux-Ozherelyeva ◽  
Nicolas Pannetier ◽  
Mbaye Diagne Mbaye ◽  
Sylvain Gaillard ◽  
Jean-Luc Renaud
Keyword(s):  
Reductive Amination ◽  
Iron Complex
Sign in / Sign up

Export Citation Format

Share Document