A novel MgCl2-supported Ziegler–Natta catalyst containing 2-isoamyl-2-isopropyl-1,3-propandiol dibenzoate donor for propylene polymerization was studied, and compared with catalysts with different internal donors, such as benzoate, phthalate and diether, in polymerization dynamic behavior, acti...

Today a variety of endocrine disrupting chemicals (EDCs) are recognized in the group of metabolic disruptors, a wide range of environmental contaminants that alter energy balance regulation by affecting the peroxisome proliferator-activated receptor (PPAR)/retinoid X receptor (RXR) pathway. Here...

Endocrine disrupting chemicals (EDCs) are known to disrupt normal metabolism and can influence the incidence of obesity in animals and humans. EDCs can exert adverse effects at low concentrations, often in a non-monotonic dose-related fashion. Among EDCs, Bisphenol A (BPA) is extensively used in...

Biodegradation mechanisms were elucidated for three dibenzoate plasticizers: diethylene glycol dibenzoate (D(EG)DB), dipropylene glycol dibenzoate (D(PG)DB), both of which are commercially available, and 1,6-hexanediol dibenzoate, a potential green plasticizer. Degradation studies were done usin...

The kinetics of the biodegradation of two commercial plasticizers, diethylene glycol dibenzoate (D(EG)DB) and dipropylene glycol dibenzoate (D(PG)DB), as well as two alternative plasticizers, 1,3-propanediol dibenzoate and 2,2-methyl-propyl-1,3-propanediol dibenzoate, were investigated in an aer...

The prediction of the absolute configuration of chiral alcohols, namely phenylcarbinols, from the 31P NMR spectra of the diastereoisomers obtained with organophosphorus diamino-derivatizing agents is presented. A simplified model based on NMR and crystallographic data is given, which associates ...

The investigation has been made in the synthesis of azo hybrid rylene dyes. The hybridization of perylene bis-diimide with phenolic azo-dyes was carried out by the nucleophilic substitution (SNAr) reaction of tetrachloroperylene-3,4,9,10-bisdiimide 3 with phenolic azo-dyes 4a–g in basic medium....

In order to meet the need for NMR reference compounds in the study of tautomeric azo dyes, two series of azo dyes, derived from 3-methyl-1-phenyl-4-(phenyldiazenyl)-1H-pyrazol-5-amine and 5-methyl-2-phenyl-4-(2-phenylhydrazono)-2,4-dihydro-3H-pyrazol-3-one, have been studied by using molecular s...

The title compound is potentially tautomeric and its tautomerism was studied by means of molecular spectroscopy (1H and 13C NMR and UV–Vis) in DMSO as well as by quantum chemical calculations (M06-2X/TZVP). The detailed assignment of the NMR signals supported by the theoretical calculations cle...

A series of grafted azo-polymers was prepared from commercial low density polyethylene thin plates (PE). Polyethylene was reacted in the presence of acryloyl chloride using gamma irradiation to give precursor grafted polymers. These materials were esterified in the presence of six different comm...

Benzoxazine derivatives are useful building blocks and display various biological activities. We serendipitously discovered and subsequently developed a new one pot method for the synthesis of 2-(dimethyl amino)/2-morpholino/2- (piperidin-1-yl)-4H-benzo[e][1,3]oxazin-4-ones from corresponding su...

This study deals with the synthesis of tert-O-alkyl thiohydroxamates and their use as tert-alkoxyl radical precursors. tert-Alkoxyl radicals were applied in mechanistic studies to determine rate constants of (i) p-chlorocumyloxyl radical addition to bicyclo[2.2.1]heptene (k=1×107 M−1 s−1), (ii)...

We recently presented that compounds 4a–b moderately inhibited leukotriene (LT) formation in human neutrophils. For structural derivatization of 4a–b, novel thirty-six title compounds were synthesized and led to more potent inhibition of LT biosynthesis in activated human neutrophils exemplifi...

A novel 2-(Z,E-1,2-diferrocenylvinyl)arenooxazoles 4a-f and 5a-e (24–32%, 2:1, respectively), 3-ferrocenyl-2-ferrocenylmethyl-2-morpholino-2H-areno[1,4]oxazines 7a-f (22–33%), 2′,3′-diferrocenyl-3H-spiro[areno[d]oxazole-2,1′-cycloprop[2]ene] 6-f (5–6%), 2-ferrocenylarenooxazoles 3a-e (4–6...

A series of 2-(1-{2,6-bis[bis(4-fluorophenyl)methyl]-4-methylphenyl-imino}ethyl)-6-[1-(arylimino)ethyl]pyridylcobalt(II) chloride complexes (Co1–Co5) was synthesized and characterized by FT-IR spectroscopy and elemental analysis. The molecular structures of the representative cobalt complexes C...

Bis(alkylthio)carbenes have been shown to be a useful class of reactive intermediates for applications to organic synthesis. Substituted hydroindolones, isatins and hydroquinolones can be prepared by the addition of these carbenes to vinyl isocyanates.

The fluorescence behavior of some derivatives of 3-phenylmethylene-1(3H)-isobenzofuranone and 5-amino-3-phenylmethylene-1(3H)-isobenzofuranone in different media at room temperature and in frozen matrix at 77 K are reported. It is found, that in the cases of the amino substituted compounds at 29...

This work describes the synthesis and characterization of six new dinuclear platinum complexes having N,N′-di-(2-aminoethyl)-1,3-diamino-2-propanol, aryl substituted N-benzyl-1,4-butanediamines and N-benzyl-1,6-hexanediamines as ligands. They were prepared by the reaction of cis-[PtCl2(DMSO)2] ...

Anaerobic biotransformation of the 3-carbon compounds, namely acrolein, acrylic acid, allyl alcohol, and n-propanol was investigated in upflow anaerobic sludge blanket (UASB) reactors containing granular cultures. The toxic effects of acrolein, acrylic acid, and allyl alcohol on an acetate-enric...

1-(N,N-Dimethylamino)-2-propanol dodecanoate (DAIPD), a new biodegradable penetration enhancer was prepared by condensing lauroyl chloride with 1-(N,N-dimethylamino)-2-propanol. The penetration enhancing effects of DAIPD on the transdermal delivery of clonidine, hydrocortisone, and indomethacin ...