One-pot three-step sulfonylative alkoxyhydroxylation of 2-arylpropenes 1 affords oxygenated sulfonylcumenes 4 in moderate yields via a sequential route: (i) NBS-mediated allylic bromination of 2-arylpropenes 1 in CH2Cl2, (ii) sodium sulfinates 2-promoted nucleophilic substitution of the resultin...

The possibilities of separating various aromatic sulphonic acids used as intermediates in production of synthetic dyes by reversed-phase high-performance liquid chromatography (HPLC) and capillary zone electrophoresis (CZE) were studied. Isomeric naphthalene mono- to tetrasulphonic acids are bes...

Nitrite in river and sea-water was determined fluorometrically by flow-injection analysis. In acidic medium, nitrite was reacted with 3-aminonaphthalene-1,5-disulphonic acid (C-acid) to form the diazonium salt, which was converted into the fluorescent azoic acid salt in an alkaline medium. The c...

Caspase-8 is an initiator of apoptotic signalling, and aberrations in procaspase-8 have been verified to be associated with malignant tumours. In previous studies, various procaspase-8 mutants were identified in AML patients, such as Q482H and M476W/Q482H mutations. The Q482H mutation can abolis...

The hydrophobicity of porous particles is important for the performance of mixed-matrix membranes for pervaporation separation of n-butanol aqueous solution. Here, a strategy was proposed to further enhance the hydrophobicity of ZIF-8. ZIF-8 particles were first coated by polydopamine (PDA) to c...

In this paper, we report the first rotaxane structure of p-sulfonatocalix[8]arene as part of a supramolecular 3D co-ordination polymer. In this structure, 4, 4′-bipyridine-N, N’-dioxide (bpdo) as the linear axle and p-sulfonatocalix[8]arene as the wheel have been reported. The structure provid...

The N-expansive systems have been recently studied in the literature [6], [7], [9], [14]. Here we characterize them as those homeomorphisms for which every Borel probability measure is N-expansive. In particular, the strongly measure expansive homeomorphisms in the sense of [8] are precisely the...

First principles studies on the electronic structure, stability, and magnetic properties of CrnTem (1 ≤ n ≤ 6, 1 ≤ m ≤ 8) clusters have been carried out within a density functional framework. Investigations into the energetic stability indicate that Cr4Te6 and Cr6Te8 are energetically stable...

Zeolitic Imidazolate Framework-8 (ZIF-8) has attracted great attention from different research fields owing to its high specific surface area and three-dimensional (3D) frameworks. Moreover, ZIF-8 can be converted into nitrogen doping porous carbon material by high temperature calcination. In ou...

The diffusion process is the rate-limiting step for n-butanol recovery from diluted aqueous solution, which can be improved by incorporating hydrophobic nanoparticle into the polymer matrix. However, the micropore structure of zeolitic imidazolate framework-8 (ZIF-8) in the commonly applied ZIF-...

Through the utilization of Hiqbt (1-(benzo[b]-thiophen-2-yl)-isoquinoline) or Hdpbq (2,3-diphenyl benzo[g]quinoxaline) as the C^N main ligand and 8-Hq (8-hydroxyquinoline) as the N^O ancillary ligand, two [Ir(C^N)2(N^O)]-characterized heteroleptic complexes [Ir(iqbt)2(8-q)] (1) and [Ir(dbpq)2(8-...

Three new compounds of copper(II) viz. [Cu(BQCNH2)(CH3CN)](ClO4)2∙CH3CN 1, [Cu(BQCNH2)(bpy)](ClO4)2 2 and [Cu(BQCNH2)(phen)](ClO4)2∙2H2O 3 (BQCNH2 = N,N′-di(quinolin-8-yl)cyclohexane-1,2-diamine, bpy = 2,2′-bipyridine and phen = 1,10-phenanthroline) were synthesized and characterized by IR, UV...

Following ingestion of [2-14C](–)-epicatechin by rats, radioactivity in urine, feces, body fluids and tissues collected over a 72 h period, was measured and 14C-metabolites were analyzed by HPLC-MS2 with a radioactivity monitor. In total 78% of the ingested radioactivity was absorbed from the g...

In this work, N,N-dimethylacetamide (DMAC) and furfural were selected as solvents to separate the mixture of (N,N-dimethylisopropylamine (DMIP) + acetone) by extractive distillation. The isobaric vapour–liquid equilibrium (VLE) data for the binary systems of (DMIP + acetone), (DMIP + DMAC), (DM...

SummaryByakangelicin, a main furanocoumarin constituent isolated and characterized as an aldose reductase inhibitor from the roots of Angelica dahurica, was evaluated for usefulness in the treatment of galactosemic cataract and diabetic complications in animal experiments.Cataract formation and ...

BackgroundThe elucidation of the biological roles of individual active compounds in terms of their in vivo bio-distribution and bioactivity could provide crucial information to understand how natural compounds work together as treatments for diseases.

Two new fluorinated phenylisoquinoline-based iridium(III) complexes, [Ir(f2piq)2(bipy)][PF6] (3a) and [Ir(fmpiq)2(bipy)][PF6] (3b) (f2piq = 1-(2,4-difluorophenyl)isoquinoline, fmpiq = 1-(4-fluoro-2-methylphenyl)isoquinoline, bipy = 2,2′-bipyridine), have been synthesized and fully characterized...

Four new cyclometalated phenylisoquinoline-based iridium(III) complexes [Ir(C∧N)2(bipy)]PF6 (5a–5d) (bipy = 2,2′-bipyridine) have been synthesized and fully characterized, where the C∧N ligands are 1-(4-(trifluoromethyl)phenyl)isoquinoline, 4-(isoquinolin-1-yl)benzaldehyde, 4-(isoquinolin-1-...

The silicon-mediated synthesis of 4-hydroxy-6,7-dimethoxy-3-phenylisoquinoline derivatives is reported. The described procedure implies synthetically useful yields and a high degree of stereoselectivity.

The nitrogen analog of the pinacol rearrangement has been utilized for the preparation of a 4-phenylisoquinoline 9 from the intermediate amino alcohol 8.