The interaction between luminescent Eu(TAN)2(Phen) ternary complex (where TAN = 4,4,4-Trifluoro-1-(2-naphthyl)-1,3-butanedione and Phen = 1,10 phenanthroline) with prometryne and aldicarb sulfoxide was studied by fluorescence spectroscopic technique. The results showed that the luminescence of e...

Photocatalytic properties of fibers containing TiO2 nanoparticles were explored for use as a self-decontaminating material using degradation of the pesticide aldicarb as the model toxin. During the analysis of the aldicarb treated sample by liquid chromatography (LC) with diode array detector (D...

A direct GC/MS determination of aldicarb[2-methyl-2-(methylthio) propionaldehyde O-(-N-methylcarbamoyl) oxime] and its structural isomer butocarboxime[2-methylthio-O-(-N-methylcarbamoyl) butanone-3-oxime] is reported. Mild GC conditions, using 2% OV-17 as liquid phase provide the lowest extent o...

Immobilized lipases are excellent biocatalysts for the enzymatic synthesis of short- and medium-chain fatty esters used as food flavor compounds. Herein a new approach for a magnetic core-shell biocatalyst by immobilization of Candida antarctica B lipase is reported, coating single-core magnetic...

Electrochemical oxidation of catechols (1a–c) has been studied in the presence of methyl acetoacetate (2a) and ethyl acetoacetate (2b) as nucleophiles in aqueous solution using cyclic voltammetry and controlled-potential coulometry. The results indicate that the quinones derived from catechols ...

The reaction between 2-acetylbenzofuran and acetic anhydride at 60°C in the presence of HY-zeolite (SiAl = 16) led to a single final product: 3-(benzofuran-2-carbonyl)pentane-2,4-dione resulting from two consecutive acylation steps on the side chain. It was obtained in a 90% purity at around 50...

In this study, a novel acrylamide monomer was synthesized and characterized by UV-Vis, FT-IR and 1H NMR measurements. The acrylamide monomer namely, N-(2-acetyl-benzofuran-3-yl)acrylamide (NABA), was prepared in two steps. In the first step, 1-(3-aminobenzofuran-2-yl)ethan-1-one was synthesized ...

The Suzuki–Miyaura reaction of 1-iodo-cyclohexene and phenylboronic acid (or 3-trifluoromethoxy-phenylboronic acid) was investigated concerning the detailed analyses of the catalytic mixtures. The reaction was carried out both under argon (‘direct’ Suzuki–Miyaura coupling) and carbon monoxid...

Carbonyl fluoride will add to alkane- and perfluoroalkanenitriles and alkanedinitriles in anhydrous acids to form the corresponding α,α-difluoroalkyl isocyanate, perfluoroalkyl isocyanate, or α,α,ω,ω,-tetrafluoro-α,ω-diisocyantoalkane. With acetonitrile the reaction proceeded slowly in a...

Isothermal Vapor–Liquid Equilibrium (VLE) data for the binary mixture of CO2 + R-1234ze(E)(trans-1,3,3,3-tetrafluoroprop-1-ene) were measured using a static-analytic method apparatus at seven temperatures between 283.32 and 353.02 K and pressures up to 7.6 MPa. For temperatures over the critica...

In this work, liquid phase densities of two fourth generation refrigerants, cis-1,3,3,3-tetrafluoroprop-1-ene R1234ze(Z) and trans-1-chloro-3,3,3-trifluoropropene R1233zd(E), are measured. The densities have been measured using a vibrating tube densimeter over the temperature range from 273.15 K...

Due to concerns about global warming, there is interest in 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) and trans-1,3,3,3-tetrafluoropropene (R1234ze(E)) as potential replacements for refrigerants with high global warming potential (GWP). In this paper we survey available data and provide viscosity c...

In this paper, 38 speed of sound measurements in the compressed liquid phase of a high purity sample of the novel alternative working fluid cis-1,3,3,3-tetrafluoroprop-1-ene (R-1234ze(Z)) are reported along five isotherms, ranging from 273.15 K to 333.15 K for pressures up to 25 MPa. The experim...

The solubilities of trans-1,3,3,3-tetrafluoroprop-1-ene (R1234ze(E)) in pentaerythritol tetrapentanoate (PEC5) have been measured from 283.15 to 353.15 K based on the isochoric method. The experimental solubility data were correlated using the Peng–Robinson equation of state with Huron–Vidal m...

Imines 3–6 containing fluorinated N-substituents were prepared by reactions of fluorinated sulfinylamines 1, 2 with hexafluoro-acetone and ethyl trifluoropyruvate; trifluoromethylsulfonylimines 3, 5 exothermically reacted with dienes at –50 °C to form cycloaddition products 7, 9 and α-aminoa...

A convenient synthesis for 2-trifluorometylaziridine-2-carboxylates and respective acids, based on reaction of N-substituted trifluoropyruvate imines 1 with diazomethane, was developed.

A series of novel β-hydroxy-β-bis(trifluoromethyl)-imines (2a–j) and di(β-hydroxy-β-bis(trifluoromethyl))-diimines (3a–f) were prepared in moderate to good yields via a simple two-step approach: first, β-hydroxy-β-bis(trifluoromethyl)-ketones (1a–c) were obtained by a catalyst-free aldo...

Synthetic approach based on mediated addition of different trifluoromethylated building blocks to selected acyclic imines giving access to a variety of β-hydroxy-β-trifluoromethyl imines are elaborated. A reaction between fluorinated adducts and imines proceed easily giving the condensation pr...

The reaction of imines of hexafluoroacetone and 1,3-dichlorotetrafluoroacetone with CCl4 catalyzed by AlCl3 leads to the formation of (XCF2)2CClNCCl2 in moderate to high yield. The treatment of these imines with alkali metal fluoride in a polar solvent results in high yield formation of (XCF2)...

Gas phase irradiation of N2F4 (NF2) in the presence of hexafluoroacetone imine (I), N-chlorohexafluoroacetone imine (II), or N-bromohexafluoroacetone imine (III) resulted in the formation of products that correspond to either perhalogenation of the unsaturation or conversion of the substrate to ...