19673-85-9

Upstream product

• 50-00-0 formaldehyd 
• 131543-46-9 Glyoxal 
• 100-46-9 benzylamine 
• 100-44-7 benzyl chloride 
• 5587-42-8 imidazolyl sodium 
• 288-32-4 1H-imidazole 
• 100-39-0 benzyl bromide 
• 46924-37-2 N,N'-Dibenzyl-1,2-ethanediimine 
• 4238-71-5 1-benzylimidazole 
• 18156-74-6 1-(Trimethylsilyl)imidazole 

Downstream Products

• 1365258-86-1 1,3-dibenzylimidazolium-2-dithiocarboxylate 
• 1328886-81-2 C₁₇H₁₇N₂O₆S₂⁽¹⁺⁾*HO₄S^(1-) 

Relevant academic research and scientific papers

Nanohybrid materials from the intercalation of imidazolium ionic liquids in kaolinite

A series of novel organic-inorganic nanohybrid materials were obtained by the intercalation in the interlamellar spaces of the clay mineral kaolinite, of ionic liquids based on imidazolium derivatives. The intercalation procedure was successfully accomplished via a melt reaction strategy using the dimethylsulfoxide-kaolinite intercalate (DMSO-K) as a precursor. 13C MAS NMR as well as XRD, TGA/DTA and FTIR studies confirmed the complete displacement of DMSO molecules by the imidazolium salts during the intercalation process. Increase of the basal spacing from 1.1 nm in DMSO-K to 1.3-1.7 nm in the nanohybrid materials was observed, indicating that imidazolium derivatives are oriented in a way such that the imidazole ring is parallel, or slightly tilted by an angle of 10-25°, with respect to the kaolinite internal surfaces. The number of moles of organic material loaded in the nanohybrids was obtained from several independent measurements. The intercalation of the imidazolium salts increases the thermal stability of the resulting material by more than 150 °C with respect to DMSO-K. After heating under air at 300 °C for two hours, XRD showed that the structure of the intercalates was kept with only a slight decrease of the intercalation ratio. The original kaolinite structure was recovered after heating the intercalate at 350 °C for an additional two hours. This observed high thermal stability is promising for the use of these nanohybrid materials as precursor for the synthesis of new nanocomposites by incorporation of polymer in kaolinite at high temperature. The Royal Society of Chemistry.

Synthesis, structural and spectral properties of Au complexes: Luminescence properties and their non-covalent DNA binding studies

Gold complexes of 1,3- bis-pyridylimidazolium chloride (L1), 1,3-bis-[2,6-diisopropylphenyl]imidazolium chloride (L2) and 1,3-bis-[benzyl]benzimidazolium chloride (L3) were synthesized and characterized by analytical methods. For the complexes, electronic spectral results show that there is a marked difference in the band feature observed in the spectra, ascribed to the greater relativistic effect of gold. In fluorescence studies, the complexes develop emission bands in the visible region (400-600 nm) after excitation at around 350 nm. Au complex-DNA binding was studied, and it was observed that genomic DNA isolated from the U373-GB cell line was fragmented and in some cases degraded by the Au complexes. Furthermore, the intensity of the DNA band increased when concentration of the metal complex was augmented. This study shows that the DNA cleavage is mediated by the Au complex. Copyright

14N NMR and two-dimensional suspension 1H and 13C HAMAS NMR spectroscopy of ionic liquids immobilized on silica

A variety of popular ionic liquids have been synthesized and characterized, including by optimized 14N NMR spectroscopy of the neat and dissolved ionic liquids. Ionic liquids incorporating Si(OEt)3 groups have been immobilized on silica in a well-defined manner with the imidazolium moiety remaining intact. This has been proved by optimized one- and two-dimensional 1H and 13C HRMAS NMR spectroscopy of the materials suspended in suitable solvents.

Two-step solid-state synthesis of PEPPSI-type compounds

The two-step mechanochemical preparation of carbene-pyridine complexes of palladium and platinum is reported. The organometallic products, which represent a class of commercially available catalysts, are rapidly formed in excellent yield proving solvent-free synthesis to be a viable synthetic alternative even in the case of NHC-containing compounds.

Efficient removal of phenolic compounds from model oil using benzyl Imidazolium-based ionic liquids

Three benzyl imidazolium-based room temperature ionic liquids (RTILs) with various substituents namely allyl, benzyl, and vinyl were synthesized and used as solvents in liquid-liquid extraction for the removal of phenolic compounds from hexane as the model oil. The RTILs were characterized using 1H NMR, 13C NMR, FT-IR, and CHN elemental analyses. Their density and viscosity were also measured. Five main parameters were evaluated through the removal process; the effect of IL substituent, the phase volume ratio of IL and model oil, phase contact time, and temperature. IL containing allylic substituent showed outstanding performance with approximately 95% efficiency under selected optimized conditions. To ensure that the RTIL can be used as a solvent for the removal of phenol, various other types of model oil apart from hexane such as petroleum ether, heptane, and cyclohexane were also used. The RTIL exhibited good recyclability and negligible loss of mass even after six cycles. Further mechanistic interactions between RTIL and phenol were studied by 1H NMR and FT-IR.

METHOD FOR PRODUCING AMIDATE COMPOUND, AND AMIDATE COMPOUND

A method for producing an amidate compound represented by Formula (4), comprising reacting an iminium salt represented by Formula (1) and an organic compound represented by Formula (3), wherein Formulas (1), (3), and (4) are as defined in the description.

Mechanism studies of oxidation and hydrolysis of Cu(I)–NHC and Ag–NHC in solution under air

The decomposition of copper(I)–NHC and silver-NHC complexes in solution under air was studied. The Cu(I)–NHCs were oxidized into urea derivatives and hydrolysed into imidazoliums or benzimidazoliums. The decomposition of Ag–NHC with a saturated backbone led to ring-opening product, while the Ag–NHC with an unsaturated backbone led to imidazolium and Ag-bisNHC complex. The effects of steric property, hydrophilicity, and binding energy of NHC to O2 and H2O on the decomposition of Cu(I)–NHC were studied using theoretical calculations. Steric hindrance played an important role on the stability of Cu(I)–NHC. Pathways for the decomposition of Cu(I)–NHC and Ag–NHC were proposed.

Synthesis of Imidazolidinone, Imidazolone, and Benzimidazolone Derivatives through Oxidation Using Copper and Air

A new synthetic method of urea derivatives using copper and air was developed. These mild conditions provided moderate to very good yields for 15 examples (53-93%), while low yields were obtained with sterically hindered substrates (3 examples). The reaction was found to go through an in situ generated copper-N-heterocyclic carbene, which was then oxidized into cyclic urea derivatives possessing alkyl, benzyl, aryl, hydroxy, Boc-protected, and tertiary amine groups.

Highly efficient carbene and polycarbene catalysis of the transesterification reaction

Highly efficient carbene and polycarbene catalysis of the transesterification reaction of ethyl benzoate in methanol has been observed and results in values of TON as high as 4000–6150 at a molar ratio of ester to methanol of 1:18 at room temperature. The most effective catalysts were found to be the individual carbenes or in situ generated carbenes, namely adamantyl and aromatic substituted cyclic compounds and polymeric carbenes. None of the reactions requires the use of molecular sieves. The polymeric imidazol-2-ylidene catalyst was used for the efficient production of biodiesel fuel from sunflower oil.

A ruthenium complex and its preparation method, use

The invention relates to a ruthenium complex, the structural formula of which is shown in a formula I. Compared with cis-platinum, the ruthenium complex provided by the invention is small in toxic and side effects and is good in drug absorption, strong in anti-cancer activity, strong in ability of inducing tumor cell apoptosis and strong in ability of being bonded with DNA, and shows a good function in tumor treatment. The formula is shown in the description.