Organotin(IV) dithiocarbamate complexes, RSnClL2 and R2SnL2 (R = Me, Bu, Ph, and L = N-ethyl-N-phenyldithiocarbamate), have been synthesized by the reaction of mono- and disubstituted organotin(IV) with ammonium dithiocarbamate. The complexes were characterized by elemental analyses, and spectro...

We report the synthesis and characterization of some organotin(IV) compounds of N-butyl-N-phenyldithiocarbamate complexes represented as [C4H9SnL2] (1), (CH3)2SnL2] (2), (C4H9)2SnL2] (3), (C6H5)2SnL2] (4)], where L is N-butyl-N-phenyldithiocarbamate. Single crystal X-ray analysis of compounds 2 ...

5-Ethoxycarbonylmethylene-cyclooctanone (3) is prepared by Wittig monoolefination of dione 1 with phosphorus ylide 2. Thermal transannular cyclization of oxime 6 and phenylhydrazone 12 of the ketone 3 affords 3-oxa-2-aza- and 2,3-diaza[3.3.3] propellanes 7 and 14 respectively. Irradiation of ket...

In this study, magnetic nanoparticles superficially modified with polydopamine were used for the immobilization of d-amino acid oxidases from Rhodosporidium toruloides (RtDAO) and Trigonopsis variabilis (TvDAO). The thermal and oxidative stabilities of RtDAO were improved significantly after imm...

Herein, we performed first principles density functional theory (DFT) calculations to explore the structural and electronic properties of various transition metal complexes of 4-(2,2′;6′,2′,2″-terpyridine)-4-mercaptobenzoic acid ligand. The structural and electronic analyses reveal that amon...

In this paper, 4-mercaptobenzoic acid (4-MBA/pMBA) was designed as a model molecule for theoretical and experimental studies of the molecule structure. Density functional theory (DFT) calculations have been performed to predict the IR and Raman spectra for the molecule. In addition, Fourier tran...

A novel Au-decorated α-Fe2O3 nanocomposite has been successfully prepared using 4-mercaptobenzoic acid as bridging agent via a facile and cost-effective method. The formed 10 mol% Au-decorated α-Fe2O3 (Au/α-Fe2O3) nanocomposite demonstrates a narrower band gap (1.88 eV), 4.3 times larger phot...

In this work, a novel metal-enhanced electrochemical sensor based on silver nanoparticles (AgNPs) signal amplification was presented for highly sensitive determination of Cu2+. Gold nanoparticles were electrochemically deposited on fluorine doped tin oxide, and then 4-mercaptobenzoic acid (MBA) ...

The dipole moments of phenylmethylchlorogermanes of the general formula C6H5(CH3)3−nGeCln and ofp-substituted phenyltrichlorogermanesp-XC6H4GeCl3 where X = H, F, Cl, CH3, OCH3 were determined in benzene at 25°. A comparison with analogous compounds of silicon and tin indicates that the germaniu...

A simple and efficient gold-catalyzed coupling of secondary amine with phenylglyoxal derivatives has been developed, which provides a practical synthetic strategy for the synthesis of substituted α-ketoamides under mild reaction conditions.

Using polyethylene oxide (PEO) with 4-amino-N-(2-pyrimidinyl) benzene sulfonamide (APBS) and hydroxyl at both ends as parent compounds, 5-fluorouracil (5-Fu) and nitrogen mustard (N-Mu) were successfully grafted on PEO end respectively by esterifying reaction of acyl chloride derivatives of 5-Fu...

The following organophosphates were tested for their ability to induce DNA damage in a rec-type repair test with Proteus mirabilis strains PG713 (rec− hcr−) and PG273 (wild-type) and point mutations in the his− strain TA100 of Salmonella typhimurium:O,O-dimethyl-O-(1,2-dibromo-2,2-dichloroethyl)...

The antioxidant activity of glucose–histidine MRPs (GH) and fractionated GH, obtained from the elution of GH on Bio-gel P-2 column, was evaluated for their DPPH radical scavenging activity, ABTS radical scavenging activity and reducing power, which illustrated that fraction H7 was of the greate...

The synthesis and anti-influenza activity study of Diels-Alder adducts of 3-N-substituted derivatives of (−)-cytisine with N-substituted maleimides are described. Synthesized compounds were studied for antiviral activity against influenza virus A/California/07/09 (H1N1)pdm09 in MDCK. The values ...

Low alcohol hulless barley wine (HW) is a popular beverage among the highland areas in China. It is known to have several health benefits due to the presence of β-glucan and antioxidant compounds. Therefore, the total β-glucan content, total phenols and flavonoids of HW samples from the highla...

An efficient, high yields and rapid synthesis of N-tert-butyl-4-(4-substituted phenyl)-2-((substituted-2-oxo-2H-chromen-4-yl)methylthio)-6-oxo-1,6-dihydropyrimidine-5-carboxamide derivatives (4a–4j) under microwave-irradiation has been described. All the newly synthesized compounds (4a–4j) wer...

AimNovel heterocycle 3-cyano 6,9-dimethyl 4-imino 2-methylthio 4H pyrimido [2,1-b] [1,3] benzothiazole 3 has been prepared by using 2-amino 4,7-dimethtyl benzothiazole 1 and bis-methylthio methylene malononitrile 2.

Ethnopharmacological relevanceRaphanus sativus seeds (Brassicaceae) known as Raphani Semen have long been used as anti-cancer and/or anti-inflammatory agents in Korean traditional medicine. This study was designed to isolate the bioactive constituents from the seed extracts of Raphanus sativus a...

Trifluoromethyl ether and difluoro(methylthio)methyl ether of phenols and aliphatic alcohols were selectively synthesized from the corresponding dithiocarbonates. When IF5-pyridine-HF was used alone in the reaction of the dithiocarbonate, the difluoro(methylthio)methyl ether was selectively form...

The synthesis and characterization of peripherally tetra 4-(methylthio)phenoxy substituted metal-free(2), Zn(II) (3) and Co(II) (4) phthalocyanine derivatives were reported. These newly synthesized phthalocyanine derivatives showed the enhanced solubility in organic solvents and they were charac...