205993-26-6

Upstream product

• 4648-54-8 trimethylsilylazide 
• 1522-20-9 acetylacetone 
• 24544-04-5 2,6-diisopropylbenzenamine 
• 123-54-6 acetylacetone 

Downstream Products

• 1154739-65-7 C₃₆H₅₄N₄ 
• 1196785-70-2 N,N'-(1,3-propanediyl)-bis[2-(2,6-diisopropylphenyl)amino-4-imino-2-pentene] 

Relevant academic research and scientific papers

Synthesis, characterization, and catalytic activity of sodium ketminiate complexes toward the ring-opening polymerization of l-lactide

Studies of the ring-opening polymerization of l-lactide (LA) using Na complexes with Schiff base ligands as catalysts have revealed high catalytic activity but poor controllability of the polymer molecular weight. In this study, Na complexes bearing ketiminate ligands instead of Schiff base ligands were synthesized and their application in LA polymerization was tested. The polymerization results revealed that the catalytic activity of Na complexes bearing ketiminate ligands was higher than that of Na complexes bearing Schiff base ligands, but the poor controllability of polymer molecular weight was still a drawback. However, the poor controllability could be improved by means of using a high concentration of initiators in the polymerization system at 0 °C for 1 min. LPy-Na revealed the excellent controllability of polymer molecular weight depending on the ratio of [LA]/[initiator] (the molar averages of the number from 4500 to 35 000) with narrow polydispersity indexes, ranging from 1.29 to 1.35.

Synthesis and Characterization of Methyl-Palladium and -Platinum Complexes Supported by N,O- and N,S-Donor Ligands

The methylpalladium and -platinum complexes [Pd(AcNac)(PMe3)CH3], [Pd(SacNac)(PMe3)CH3], and [Pt(SacNac)(PMe3)CH3] have been prepared from protonation reactions between AcNac [H3

Divalent Ytterbium Iodide Supported by β-Diketiminato Based Tridentate Ligand: Synthesis, Structure and Small Molecule Activation?

Divalent ytterbium iodide [LYb(μ-I)(THF)]2 (1; L = [MeC(NDIPP)CHC(Me)NCH2CH2NMe2]?, DIPP = 2,6-(iPr)2C6H3) was synthesized and its reactivity was studied. Complex 1 was synthesized by salt metathesis of YbI2(THF)2 with the potassium salt of ligand (KL) in high yield. In the reactions with trimethylsilyl azide, azobenzene, sulfur and diphenyl disulfide, complex 1 acts as a 2e reductant. In the reaction with CO2, the central carbon atom of β-diketiminato backbone in 1 nucleophilically attacks the CO2 molecule to give a divalent ytterbium carboxylate.

Binuclear β-diketiminate complexes of copper(i)

The reaction of a series of dinucleating bis(β-diketiminate) pro-ligands with mesitylcopper in the presence and absence of mono and diphosphines has allowed the isolation of a new series of dicopper(i) complexes. Inclusion of trans-1,2-cyclohexyl (1), 2,6-pyridyl (2), and 2,2′-oxydiaryl (3) spacers between the β-diketiminate units has been studied. The isolation of three new copper(i) phosphine complexes [1·Cu2(PPh3)2], [2·Cu2(PPh3)2] and [3·Cu2(PPh3)2] is reported. While these compounds display large Cu?Cu separations of 5.4-7.9 ? in the solid state, solution data are consistent with a large degree of conformational freedom. Modification of the monophosphine to a diphosphine, DPPE, allowed the isolation of the novel 11-membered bimetallic macrocycle [2·Cu2(DPPE)] containing both a binucleating nitrogen based ligand and a chelating diphosphine. While acetonitrile adducts of this series could also be generated in situ, under forcing conditions reaction of the 2,6-pyridyl bridged ligand with mesityl copper led to the formation [2·Cu2]2. This latter complex is a dimer of dicopper(i) units in which the bis(β-diketiminate) ligand now binds four copper(i) centers through not only the expected κ2-N,N′-chelation but also κ1- and η2-binding of the central pyridine through orthogonal Cu-N and Cu-arene interactions. Reversible coordination of alkenes, pyridine and quinoline to the copper cluster was identified allowing the isolation and structural characterisation of a further series of dinuclear complexes [2·Cu2(pyridine)2], [2·Cu2(cyclopentene)2] and [2·Cu2(norbornene)2]. Solution studies allow quantification of the reversible binding event through a van't Hoff analysis. Both solution and the solid state data suggest a weak anagostic interaction exists in the latter two alkene complexes of copper(i). The new complexes have been characterized by X-ray diffraction, multinuclear NMR spectroscopy and CHN analysis.

Synthesis and characterization of iron and cobalt complexes with an asymmetric N-alkyl,N'-aryl-β-diketiminate ligand

An asymmetric N-alkyl,N'-aryl-β-diketiminate ligand L (L = 2-((S)-(-)-1-phenylethylimino)-4-(2,6-diisopropylphenylimido)pentane) was prepared. Synthesis of solvent-free chloro-bridged dimers, [LFe(μ-Cl)]2 and [LCo(μ-Cl)]2 are presented. Upon reduction in the presence of cis-cyclooctadiene, rare examples of low-valent complexes LFe(cod) and LCo(cod) were obtained. All metal complexes were fully characterized by 1H NMR spectroscopy, elemental analysis, and X-ray crystallography. Crystallographic and spectroscopic results indicate that the N-alkyl,N'-aryl-β-diketiminate ligand L is sterically smaller but a better electron donor than the N,N'-diaryl-substituted β-diketiminate ligand LMe,Dipp (LMe,Dipp = 2,4-bis(2,6-diisopropylphenylimido)pentane).

Metal coordination compound, intermediate, preparation method and application thereof

The invention discloses a metal coordination compound, an intermediate, a preparation method and application thereof, and provides a metal coordination compound I, which can be independently used forcatalyzing ethylene homopolymerization or used for catal

Metal complex, intermediate, and preparation method and application of metal complex and intermediate

The invention discloses a metal complex, an intermediate, and a preparation method and application of the metal complex and intermediate. The metal complex I can be used for catalyzing ethylene homopolymerization independently or under action of a cocatal

β-Enaminone Synthesis from 1,3-Dicarbonyl Compounds and Aliphatic and Aromatic Amines Catalyzed by Iron Complexes of Fused Bicyclic Imidazo[1,5-a]pyridine Derived N-Heterocyclic Carbenes

A series of Fe–NHC complexes (1–2)c of the fused bicyclic imidazo[1,5-a]pyridine framework of the type [CpFe(2-R-imidazo[1,5-a]pyridin-3-ylidene)(CO)2]BF4 {R = mesityl (1c), nPr (2c)} successfully carried out the synthesis of β-enamino ketones (3–10) and (17–27) and β-enamino esters (11–16) and (28–36) by the condensation of acyclic and cyclic 1,3-dicarbonyl compounds and various aliphatic and aromatic amines in the presence of light irradiation. Quite significantly, the catalytically relevant substrate adduct species of the type [CpFe(NHC)(acac)] (2e) and the product adduct species of the type [CpFe(NHC)(β-enaminone)] (2f) of the Fe–NHC precatalyst (2c) have been detected by mass spectrometry study. The [CpFe(2-R-imidazo[1,5-a]pyridin-3-ylidene)(CO)2]BF4 {R = mesityl (1c), nPr (2c)} complexes were obtained from their respective N–heterocyclic carbene precursors namely, the 2-R-imidazo[1,5-a]pyridin-2-ium chloride {R = mesityl (1a), nPr (2a)} by the reaction with CpFe(CO)2I in the presence of KN(SiMe3)2 followed by the salt metathesis reaction with AgBF4.

Oxo - nitrided iron complexes, said oxo - nitrided iron complexes including catalyst system, and [khen [khen] [cyu] gay [syen [syen] it became of dienes (hole) for the polymerization method (by machine translation)

The present invention refers to general formula (I) or (II) having oxo - nitrided iron complexes are disclosed. Said general formula (I) or (II) having oxo - [khen [khen] [cyu] gay [syen [syen] it became of dienes (ball) is nitrided iron complexes for the

Synthesis and coordination chemistry of sterically hindered cobalt(II) β-ketoiminate complexes

The reactions of cobalt(II) chloride with α,β-unsaturated-β-ketoamines, CH3C([dbnd]O)CH[dbnd]C(NHR)CH3, where R = -phenyl, HLPh; R = -mesityl, HLmes; R = -2,6-diisopropylphenyl, HLdipp, and sodium hyd