The chemoselective N-acylation of non-nucleophilic nitrogen heterocycles including indoles, pyrroles, pyrazole, and imidazole using ethyl 2-(tert-butoxycarbonyloxyimino)-2-cyanoacetate (Boc-Oxyma) under ambient conditions, which eludes purification and proceeds relatively fast with excellent yields, is reported. The substrate scope is broad, and the methodology is tolerant towards many other functional

The Zn-coating and Zn-composite coatings were produced by electroplating technique. The Zn-composite coatings are generated with the co-deposition of SnO2 microparticles and SnO2 nanoparticles. The deposit characteristics of coated samples have been depicted by SEM photo-micrographs and contact angle study. The corrosion behavior of the prepared coated samples was evaluated by electrochemical tests

Herein we reported the synthesis of Schiff base ligand and their complexes (1-5) with copper (II) metal ion and aromatic diimines. The Schiff base derived from the condensation of 2, 6- diisopropylaniline and 5- chlorosalicylaldehyde.The Schiff base ligand and their complexes (1-5) have been characterized by microanalysis, molar conductance, room temperature magnetic susceptibility, FT – IR, UV – Visible

This research paper discusses an experimental study aimed at enhancing the durability of mortar coating on pre-stressed concrete cylindrical pipes (PCCP) exposed to corrosive soil. Two mortar coating mixtures were studied: a control mixture before and after adding 17% fly ash. The specimens were exposed to Kenitra soil (non-aggressive soil) and Errachidia soil (the most aggressive environment). Several

Two novel pyran-2-one derivatives, namely (E)-4-hydroxy-6-methyl-3-(1-(phenylimino) ethyl)-2H-pyran-2-one (Py1) and (E)-3-(1-((2-chlorophenyl)imino)ethyl)-4-hydroxy-6-methyl-2H-pyran-2-one (Py2) were evaluated for corrosion inhibition performance on mild steel (MS) in 1M HCl via potentiodynamic polarization (PDP) and Electrochemical Impedance Spectroscopy (EIS). The experimental results show that the

In this present work, six new Co(II) complexes {1-6, [Co(L3)] (1); [Co(L2)] (2); [Co(L1)] (3); [Co(L2)(L3)] (4); [Co(L1)(L2)] (5); [Co(L1)(L3)] (6)} of (E)-2-(2-hydroxy-3-methoxybenzalidene)-N4-methylhydrazinecarbothioamide (HL1), (E)-2-(2-hydroxy-3-methoxybenzalidene)-hydrazinecarbothioamide (HL2) and (E)-2-(2-hydroxy-3-methoxybenzalidene)-hydrazinecarboamide (HL3), have been synthesized and characterized

Bigarreau Burlat kernel shell was valorized as an eco-friendly modifier of carbon paste electrode (BBKS-CPE) for simultaneous trace detection of Cd2+, Pb2+and Cu2+ions. The electrochemical investigation by cyclic voltammetry (CV), square wave voltammetry (SWV) and electrochemical impedance spectroscopy (EIS) revels an enhancement in the detection current intensity after the electrode modification.

Microalgae biomass is considered by many as a most promising renewable source for future generation feedstock for simultaneous production of biodiesel and bioethanol due to the accumulation of considerable amounts of lipids and carbohydrates, respectively. In this work, defatted green microalga, Chlorella sorokiniana NITTS3 biomass was ultrasonic pretreated and effectively used as a culture medium

This work aims to be a contribution in the field of corrosion control and proposes to study the effect of molar hydrochloric acid on mild steel (MS) in the presence and in the absence of 11-(Bis((1H-pyrazol-1-yl)methyl)amino)undecanoic acid(L4), employing the gravimetric method and stationary (PDP) and transient electrochemical (EIS) techniques. In addition to the experimental measurements employed

The aim of this study was to evaluate the effect of cultivation locality on the antioxidant compounds and the antioxidant capacity concerning two Moroccan prickly pear cultivars. Various extracts were prepared from two distinct cultivars by organic extraction using a Soxhlet for three plant parts (seeds, cladodes, and flowers). In this context, the potential of polyphenolic extracts from opuntia ficus

Single crystal of p-Toluidinium L-Tartrate (PTLT) was harvested via slow solvent evaporation technique. The grown PTLT crystal has a triclinic structure, P1 space group. Functional groups were affirmed by FT-IR spectroscopy. The absorption coefficient (α), energy bandgap, and linear refractive index (n0) were estimated from the UV-Vis-NIR spectrum. A broad emission band observed at 350 nm in the luminescence

The crystal structure of dihydrate salt between cadmium tetrachloride and ciprofloxacin (L), [CdCl4](HL)2•2H2O (I), LCIPC17H18FN3O3, was determined by the single crystal X-ray diffraction method. The title compound was prepared by mixing of CdCl2 water solution and L•HCl in molar ratio 1:2 and evaporation of mother solution in the room temperature. Crystal structure of I is built from the [CdCl4]2−

3-methylthio derivatives of substituted imidazo[1,2-a]pyridines were prepared by reacting imidazo[1,2-a]pyridines with dimethylsulfoxide and alkyl bromides 70-75°C heating for 18h in good to excellent yields.

The adsorption study of acid dye-eosin yellow (EY) on date palm (Phoenix dactylifera) seed, goethite and their composite was conducted using batch technique. The effects of initial concentration, pH, adsorbent dosage, agitation time and temperature were evaluated, and found to have remarkable influence on the adsorption processes with adsorbents performance in the order; composite (COM)>goethite (GT)>thermally

This synthetic overview describes the formation and characterization of branched substrates for future use in obtaining graft copolymers with characteristics appropriate for medical plastics. Due to the critical necessity of medical devices, optimization of materials used in their production is of substantial interest. The substrate synthesis was varied by utilizing reactants with different heteroatoms

In this study, reduced graphene oxide modified by sulfur (S/RGO) is synthesized through the green method. S/RGO is used as a catalyst for the elimination of lead ions (Pb2+) through the adsorption. The effects of different parameters on adsorption of lead ions through S/RGO are studied. Those parameters include the amount of adsorbent, pH of the solution, time of adsorption, and initial concentration

A novel library of sulphonamide derivatives of benzofuran-imidazopyridines (9a-j) were designed, synthesized and screened for their anticancer activity against four human cancer cell lines such as breast cancer (MCF-7), lung cancer (A549), colon cancer (Colo-205) and ovarian cancer (A2780) by employing MTT assay. The results are expressed with IC50 µM, which indicated that all of the compounds showed

A novel series of Quinazolinone-imidazo[2,1-b][1,3,4]thiadiazole hybrid deriva tives were designed, synthesized and evaluated for their anticancer activities against A549, HeLa and MDA-MB-231 human cancer cell lines by using MTT assay method with Paclitaxel and Doxorubicin as standard dugs. The compound 11c exhibited in vitro anti- proliferative activity against A549 with GI50 values of 0.25 μM, whereas

An efficient and convenient approach for the microwave-assisted synthesis of dimers of 1,2,3-triazole-benzofuran bearing alkyl spacer derivatives 7a-j through intermediate, bis-1,2,3-triazoles carrying alkyl spacer compounds 5a-e has been developed in excellent yields. Antimicrobial and antioxidant activities were tested for all the synthesized compounds. Among them, compoubd 7b showed potent antibacterial

Activated carbons of ackee apple pods were prepared at 400 °C (ZAc-400) and 500 °C (ZAc-500). The surface area and pore volume for ZAc-500 are 812.79 m2/g and 0.387 cm3/g as compared with ZAc-400 of 321.01 m2/g and 0.15 cm3/g respectively. Consequently, ZAc-500 showed better physicochemical properties and a more porous structure than ZAc-400. The presence of -OH, -CH, C=C and C-O were observed on the

The molecule N-((4-aminophenyl)sulfonyl)benzamide was optimized by making use of density functional theory (DFT) with 6-311++G(d,p) basis set. The vibrational frequency and potential energy distribution (PED) of the title compound were calculated and compared with experimental calculations. By using DFT method, the reactivity nature of the molecule was characterized, like as Local reactivity descriptor

Lemongrass leaf activated carbon (LLAC) was prepared using physicochemical process for MB dye removal from aqueous systems. The adsorbent was characterized by SEM and FTIR techniques respectively. Batch adsorption studies were investigated using four operational parameters: initial dye concentration (25 mg/L-500 mg/L), contact time (0 hr to 24 hr), temperatures (30°C - 60°C) and pH (2–12). The surface