The present work concerns with an investigation on the solubility of cis,cis-muconic acid dissolution in different polar solvents by characterizing and modelling the dissolution as a function of temperature. Water, ethanol, 2-propanol and acetic acid have been investigated as solvents in the ran...
The reactive extraction (RE) of carboxylic and dicarboxylic acids, such as cis,cis‑muconic acid (CCMA), is a promising integrated approach towards an efficient downstream processing development. Dicarboxylic acids have a high potential to be used as precursors for polymerization reactions or as ...
Cis,cis-muconic acid (CCM) is a biochemical material that can be used for the production of various plastics and polymers and is particularly gaining attention as an adipic acid precursor for the synthesis of nylon-6,6. In the current study, the production of CCM was first attempted by introduci...
Reactive extraction has been shown as an applicable first step in the downstream processing for the recovery of dicarboxylic acids from aqueous solutions, leading to yields of XRE = 0.95 ± 0.05 for cis,cis-muconic acid. A next step towards a downstream processing concept is the examination of s...
New light is shed on results published by Scelfo, Pirone, and Russo in “Thermodynamics of cis,cis-muconic acid solubility in various polar solvents at low temperature range”. We show that under the conditions described in their article, cis,cis-muconic acid isomerizes to cis,trans-muconic acid...
Performing catalysts have been synthetized through incipient wet impregnation and tested for cis,cis-muconic acid hydrogenation to adipic acid. The activity of Pt-based catalysts has been compared with an Ni-based catalyst at a gentle condition. A supported 14.2 wt% Ni on γ-alumina converted 10...
The synthesis of bicyclic 2-alkynylpyridines is performed in the presence of iodo-selenopyridines and terminal alkynes, using a palladium(II) catalyst, a copper(I) co-catalyst, and triethylamine as a base. This facile cross-coupling reaction leads to a wide variety of 2-alkynylpyridines in good ...
In dimethylformamide containing tetraethylammonium perchlorate, the [2,2′-ethylenebis(nitrilomethylidyne)diphenolato]nickel(II) complex, more familiarly known as nickel(II) salen, undergoes reversible one-electron reduction at a carbon cathode to the corresponding nickel(I) species at a potenti...
Monometallic Au/TiO2 and Pd/TiO2 and bimetallic Au–Pd/TiO2 nanoparticles were synthesized by flame spray pyrolysis (FSP) in a single step using palladium acetylacetonate, gold chloride trihydrate, and titanium butoxide as precursors dissolved in a xylene/acetonitrile mixture (70/30 vol%). For c...
In this paper we report excess molar enthalpies HmEand excess molar volumes VmEof the polar solvents N -methyl-2-pyrrolidinone (C5H9NO), N, N - dimethylformamide (C3H7NO), and dimethyl sulphoxide (C2H6SO) with 1-hexyne, or 1-heptyne, or 1-octyne at T = 298.15 K. The HmEvalues are negative for t...
A facile and rapid access to a wide range of novel 1,2,3-triazoles bearing closo-decahydrodecaborate anion [B10H10]2− has been developed through an efficient general synthetic approach. It is based on the nucleophilic cleavage of 2-tetrahydrofuranium decaborate with sodium azide to form the know...
In this paper we report activity coefficients at infinite dilutionγi∞ of { N -methyl-2-pyrrolidinone (NMP), orN , N - dimethylformamide (DMF), or dimethyl sulfoxide (DMSO) + 1-heptyne, or 1-octyne} using comparative ebulliometry. This work is a continuation of a study on (NMP, or DMF, or DMS...
TiO2-supported Pd–Au catalysts were prepared with Pd (0.5 wt%) by impregnation and then Au (1.0 wt%) by deposition–precipitation (Au/Pd/TiO2) and vice versa (Pd/Au/TiO2). For the former sample, the state of dispersion of Pd on TiO2 changed during the loading of Au, resulting in the formation o...
The preparation of novel Staphylococcus aureus (S. aureus) amperometric immunosensing designs based on the covalent immobilization of RbIgG at gold electrodes using the heterobifunctional cross-linker 3,3-dithiodipropionic acid di(N-succinimidyl ester) (DTSP), are reported. Two different competi...
Dicobalt(II) complexes [{(B)CoII}2(μ-dtdp)2] (1–3) of 3,3′-dithiodipropionic acid (dtdp) and phenanthroline bases (B), viz. 1,10-phenanthroline (phen in 1), dipyrido[3,2-d:2′,3′-f]quinoxaline (dpq in 2) and dipyrido[3,2-a:2′,3′-c]phenazine (dppz in 3), have been prepared, characterized an...
Monolayers of 3,3′-dithiodipropionic acid (DTDPA) were prepared on a polycrystalline gold electrode through a self-assembly procedure to produce a gold 3,3′-dithiodipropionic acid self-assembled monolayer (AuDTDPA) modified electrode. The characterization of the AuDTDPA electrode was investiga...
Kinetics and mechanisms of a disulfide bond disproportionation in dl-homocystine (H2HCysS) and 3,3′-dithiodipropionic acid (H2DTDPA) induced by Pd(II) species were investigated spectrophotometrically in strong hydrochloric acidic media. The products of the disproportionation are thiolate and su...
A reproducible pattern of respiratory disease was produced in calves inoculated intranasally with a pathogenic strain of bovine herpesvirus-1 (BHV-1). A latent infection was established which could be reactivated by means of corticosteroid administration. Groups of calves were given a single dos...
A novel series of anilinoquinazoline compounds with C-6 urea-linked side chains was designed and synthesized as reversible inhibitors of epidermal growth factor receptor (EGFR) based on the structure–activity relationships (SARs) of anilinoquinazoline inhibitors. All compounds demonstrated good...
A three substituted urea derivative, SA13353 (compound 1a), exhibited potent inhibitory activity against lipopolysaccharide (LPS)-induced TNF-α production. We focused on the 1,1-substituted moiety (R1 and R2) of SA13353 and investigated substituent effects of this moiety on LPS-induced TNF-α p...
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