A solid-phase microextraction (SPME) fiber coated with a two-dimensional porous organic framework (POF), JUC-Z2, was synthesized by a sol-gel process. The JUC-Z2-coated SPME fiber was combined with gas chromatography-mass spectrometry/mass spectrometry (GC–MS/MS), and a direct analysis method w...

In this study, the new bola-amphiphile tetraphenylethylene derivatives Bis(HCTA)-TPE and Bis(HCOA)-TPE were synthesized to use in device application by a green approach. Al/organic layer/p-Si heterojunctions were fabricated by the usage of Bis(HCTA)-TPE and Bis(HCOA)-TPE organic interfacial laye...

A series of eight novel donor‒acceptor based quinoxaline‒amine derivatives 2–9 were prepared by modulating donor species on quinoxaline core with Buchwald‒Hartwig coupling amination reaction. The synthesized molecules were fully characterized and studied for impact of D−A interaction on optoele...

A mild and environmentally-benign protocol for the efficient synthesis of polysubstituted pyrroles via a one-pot three-component reaction of amines, α-bromo ketones and dialkyl acetylenedicarboxylate using H3PW12O40 as a recyclable heterogeneous catalyst under solvent-free conditions at room te...

In this study, a series of novel bis-thiomethylcyclohexanone compounds (3a–3j) were synthesized by the addition of thio-Michael to the bis-chalcones under mild reaction conditions. The bis-thiomethylcyclohexanone derivatives (bis-sulfides) were characterized by 1H NMR, 13C NMR, FTIR and element...

Glassy carbon has applications in the storage of high level nuclear waste. Irradiation of glassy carbon are thus of importance to investigate. The paper reviews some aspects for ion bombardment. Glassy carbon is categorised as an amorphous material with graphitic crystallites. Glassy carbon has ...

The effects of three different substrate materials (glassy carbon, gold, and nickel electrodes) on the electrocrystallization behavior of nanocrystalline nickel in an industrial electrolyte with complex compositions were studied by cyclic voltammetry (CV), single potential step chronoamperometry...

An electrochemical method for determining the number of carboxyl groups on glassy carbon (GC) has been developed. In this method, a carboxyl group is modified with 3,4-dihydroxybenzylamine (DHBA) by the action of carbodiimide. The number of carboxyl groups can be determined from the peak area of...

Acacetin and resveratrol 3,5-di-O-β-glucopyranoside were synthesized from naturally abundant naringin and piceid in 65% and 62% overall yield, respectively. The key steps were the regioselective deacetylation of the peracetates of the glycosylated forms with Candida antarctica lipase B (Novozym...

Kaempferol 7-O-β-D-glucoside (KPG), a natural flavonol isolated from Cudrania tricuspidata, has been reported to exert anti-cancer effects; however, its anti-inflammatory effects have not yet been reported. In this study, we demonstrate the suppressive effect of KPG on the production of nitric ...

Boron difluoride (BF2) complexes of N-(5-phenyl-2-pyrazinyl)pivalamide and its derivatives having a substituent on the phenyl group were prepared and their spectroscopic properties were investigated. It was found that the BF2 complexes show fluorescence in solution and the solid state. The origi...

Synthesis of air stable di-tert-butyltin(IV) and copper(I) complexes of 2-pyrazinyl thiolate (2-pyzSH), [tBu2Sn(Spyz)2] (1) and [Cu(Spyz)(PPh3)2] (2), as molecular precursors for metal sulfide nanomaterials is described. These complexes were isolated by the reactions of [tBu2SnCl2] and [CuCl(PPh...

The reaction of chlorthalidone with methanol to give the corresponding methyl ether was investigated. The kinetics are pseudo-first-order in chlorthalidone, but the observed pseudo-first-order rate constants show an unexpected dependence on the initial chlorthalidone concentration, attributable ...

Publisher SummaryThis chapter discusses the physical properties, chemical properties, synthesis, stability, pharmacokinetics and metabolism, and analytical methods of chlorthalidone. Chlorthalidone is an antihypertensive diuretic used in the treatment of edema associated with congestive heart fa...

Chlorthalidone (CTD) is an antihypertensive drug and exhibits four crystalline forms: I, II, III and IV. In this paper, the incidence of CTD polymorphs in raw materials and in tablets as well as the solubility and dissolution properties of forms I and II have been studied. Raw materials were nam...

Supersaturating drug delivery systems (SDDS), as solid dispersions (SDs), stand out among strategies to enhance bioavailability of poorly soluble drugs. After oral administration, their dissolution in gastrointestinal fluids often leads to supersaturation, which drives to a rapid and sustained a...

The electrochemical oxidation of a zero-valent metals (copper, cobalt, nickel, zinc, and cadmium) (1–5) in an acetonitrile-methanol solution containing the equimolar amounts of 1,10-phenanthroline (phen) and the N, N, S-tridentate basic form of the Schiff base N-[2-[[3-methyl-1-phenyl-5-thioxo-...

The structural geometry, vibrational wavenumbers (FT-IR and Raman), 1H and 13C NMR chemical shifts and UV–vis. electronic absorption wavelengths of N-(12-amino-9,10-dihydro-9,10-ethanoanthracen-11-yl)-4-methylbenzenesulfonamide (C23H22N2O2S) molecule were studied using experimental and computat...

The synthesis of a series of adducts of 2-amino-1-ethylbenzimidazole (L1) in Cu(II), Co(II), Zn(II) and Ni(II) chelates of the N, N, S tridentate basic form of the tosylamino functionalized pyrazol containing Schiff base N-[2-[[3-methyl-1-phenyl-5-thioxo-pyrazole-4-ylidenemethyl]amino]phenyl]-4-...

This paper describes the different strategies devised and applied to overcome the selectivity issues in the syntheses of 6,7-disubstituted-1H-quinolin-4-one, 7-substituted-1H-1,6-naphthyridin-4-one and 6-substituted-1H-1,7-naphthyridin-4-one derivatives. They allowed us to improve the overall yi...