A new pathway was developed for the synthesis of benzyl benzoates via TBAI-mediated oxidative self-coupling of benzyl bromides in the presence of tert-butyl hydroperoxide (TBHP) as an oxidant under solvent-free conditions. Various derivatives of precursors including electron donating and withdra...

A new method based on dispersive liquid–liquid microextraction (DLLME) followed by high-performance liquid chromatography (HPLC) for determination of benzoate and sorbate salts in yogurt drinks was developed. The effective parameters in DLLME process, including volume of extraction and disperse...

A novel trifunctional catalyst with basic, acidic and metal sites was synthesized by nanocolloidal method and used in industrially important reactions. in the laboratory. The synthesized catalyst consisted of palladium and hydrotalcite supported on transition metal modified hexagonal mesoporous ...

Linear and crosslinked copolymers based on N-isopropylacrylamide, NIPAAm, containing aromatic esters, have been synthesised. Vinyl benzoate and cinnamoyloxyethyl methacrylate have been used as aromatic comonomers. Certain aromatic esters are known of their capability to form molecular complexes ...

Densities (ρ), viscosities (η) and ultrasonic speeds (u) of binary mixtures of methyl benzoate with benzene, isopropyl benzene, isobutyl benzene, acetophenone, cyclopentanone, cyclohexanone or 3-pentanone including those of pure liquids were measured over the entire composition range at temper...

A stepwise isopropylation reaction of acetone is developed for preparation of methyl isobutyl ketone (MIBK) through acetone condensation and a recoverable Pt/C-catalyzed transfer hydrogenation of mesityl oxide (MO) with isopropanol (IPA). Almost quantitative MO conversion (up to 99.9%) and excel...

Data are presented on the corneal anesthetic activity and systemic toxicity of 22 local anesthetics, including cocaine, tetracaine, dibucaine, procaine and Thiocaine® and 2-alkoxy derivatives of the last two compounds.In the procaine as well as in the Thiocaine® series, 2-propoxy or higher alkox...

The trifluoroethanolysis of [3-13C]-3,4-dimethyl-4-homoadamantyl p-nitrobenzoate gave 3,4-dimethyl-4-homoadamantene (10), 3-methyl-4-methylenehomoadamantane (11), and trifluoroethyl ether (12a) in the ratio 62:36:2 at 40 °C. The 13C labels were exclusively distributed at the positions C(3) and ...

By making use of the Co2+/pyridine (py)/O2N-4-C6H4CO2- (4-nbz) system it has been possible to isolate two new complexes with markedly different stabilities: a purple form [Co(4-nbz)2(py)2] (1) and a pink form [Co(4-nbz)2(py)2(H2O)2] (2). These compounds have been characterized by single crystal ...

The applicability of the nitrobenzoyl group [NO2C6H4CO- to protecting the functional hydroxyl group was investigated through study of the electrochemical behaviour of the butyl 4-, 3-and 2-nitrobenzoate compounds. These isomers are reduced in two cathodic steps. The first, at potentials of ca. -...

We achieved synthesis of seven stereoisomers of 1-C-n-butyl-L-iminofuranose derivatives using catalytic asymmetric alkylation and Negishi coupling as key reactions. The synthetic strategy based on these key reactions was quite useful, since both α- and β-iminofuranoses could be obtained by swi...

The curative antifungal activity of postharvest sodium ethylparaben (SEP) treatments against citrus green mold (GM) and blue mold (BM) was determined on different citrus species and cultivars artificially inoculated with Penicillium digitatum or Penicillium italicum and incubated at 20 °C and 9...

Parabens, which mainly include methylparaben (MP), ethylparaben (EP), propylparaben (PP), and butylparaben (BP), are widely used as cosmetic and food preservatives. Although these chemicals, when used as preservatives, are thought to be safe for humans, many studies have demonstrated that they h...

Ethylparaben (Eth-PB) is one of the most used parabens for preservation of many personal care products and food. However, a number of scientific studies have indicated that this compound could interfere with the endocrine or hormonal system of different living beings, which along with data about...

In this study, crude antimicrobial extract from the culture supernatant of Brevibacillus brevis FJAT-0809-GLX was extracted, and its antimicrobial activity was investigated with the agar diffusion method. The results showed that the antimicrobial activity of the culture supernatant of B. brevis ...

Parabens are used as a preservative substance in a wide range of man-made products causing deleterious effects on aquatic organisms and therefore, the concern of their effects to aquatic organisms has been increased. In this study, acute toxicity of methylparaben (MeP), ethylparaben (EtP), and p...

Ethylparaben, alkyl esters of p-hydroxybenzoic acid, is an endocrine disruptor that interfere glandular activity and hormone production and even with considerable elimination of them using conventional treatment methods, it is still recognized in river water samples at high concentrations. In th...

The current study aimed at employing Fe3O4@SiO2 nanoparticles functionalized with NH2 (FSN) to remove Ethylparaben (EtP) from aqueous solutions. A modified co-precipitation method was applied to prepare the nanoadsorbent. The FTIR, XRD, SEM, VSM, and BET techniques were used to determine the str...

The key obstacle in employing Emulsion Liquid Membrane (ELM) process for industrial separations is the stability of emulsion. In the present study, nanofluid containing Multiwall Carbon Nanotubes (MWCNT) is used for the improvement of ELM stability. Emulsion Nanofluid Membrane (ENM) consisting o...

Ethylparaben is the main antimicrobial substance in the culture supernatant of Brevibacillus brevis FJAT-0809-GLX. The present study aimed to obtain and partially characterize mutant strains with higher ethylparaben production through mutagenesis of B. brevis FJAT-0809-GLX by UV irradiation and ...