Novel unsymmetrical squarylium dyes containing the strongly electron-donating 4′-amino-2,2′-bis(diethylamino)-4,5′-bithiazole moiety were fluorescent and showed emission maxima around 640 nm. They have both alternant and intramolecular charge-transfer chromophoric systems.

New polysiloxane derivatives (P1 and P2) having mixed phenyl-substituted cyclodisilazane in the main-chain were synthesized. Their thermal properties have been characterized by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The glass transition temperature (Tg) of ...

Few (Z) -α-N-benzoylamino-β-(fluorophenyl)-acrylic acids and their esters were prepared by known procedures and hydrogenated to the corresponding optically active α-benzoyl-β-(fluorophenyl)-alanine derivatives with optical yields up to 90% using the rhodium complexes of “PROPRAPHOS” and O,...

Aminolithiation–arylation tandem cyclization of N-(2-fluorophenyl)methylaminoalkylstyryls proceeded smoothly to give hexahydro-2H-pyrido[1,2-b]isoquinoline using a stoichiometric amount of n-BuLi with high trans selectivity. The arylation reaction was highly accelerated by the addition of HMPA....

A thorough examination of weak interactions present in the crystal structure of the title compound was investigated. Intramolecular CH⋯N and F⋯S interactions make the molecule as fused 6,5,5,5,6,6-membered ring system. Two of the closely related structures show 1D-isostructurality with the title...

Human aldose reductase (AKR1B1, AR) is a key enzyme of the polyol pathway, catalyzing the reduction of glucose to sorbitol at high glucose concentrations, as those found in diabetic condition. Indeed, AKR1B1 overexpression is related to diabetes secondary complications and, in some cases, with c...

Infrared and Raman spectra were obtained for 1-bromo-3,3-dimethylbutane and 1-chloro-3,3-dimethylbutane. Each compound exists as two stable conformations. Vibrational assignments were made for both conformers of each compound with the aid of normal coordinate calculations. Molecular mechanics ca...

The response of poly(ethylene-co-1,9-decadiene) to peroxide treatment was examined and compared with a reference. The polymers were produced in a low-pressure process using a chromium-based catalyst giving a relatively high level of inherent unsaturations through thermal termination of the polym...

The barrier domain solubility-diffusion theory of lipid bilayer permeability relates the permeability coefficient (Pm) to the solute's partition coefficient (PCbarrier/w) and diffusion coefficient (Dbarrier) in the ordered chain region of the bilayer that serves as the barrier region for po...

The response to electron beam irradiation of poly(ethylene-co-1,9-decadiene) was examined and compared to a reference polyethylene. The polymers were produced in a low-pressure process using a chromium-based catalyst giving relatively high levels of inherent unsaturations through thermal termina...

The acyclic diene metathesis (ADMET) copolymerization of divinyltetraethoxydisiloxane with 1,9-decadiene, catalyzed by RuCl2(CHPh)(PCy3)2, is the first example of a siloxylene–vinylene–alkenylene copolymer reported in the literature. This copolymer was isolated and characterized by 1H, and 1...

1,9-Decadiene/propylene copolymers were obtained with isolated metallocenes and with a binary metallocene catalyst system activated by methylaluminoxane. The metallocenes under investigation were syndiospecific diphenylmethyl(cyclopentadienyl)(9-fluorenyl)zirconium dichloride (1) and isospecific...

Low to medium molecular weight H–Si-terminating and alkyl–Si-terminating co-polyadducts of 1,9-decadiene and 1,1,3,3-tetramethyldisiloxane have been synthesized. Molecular weight determination from 1H NMR data is described. Product features indicate that this novel class of siloxane-modified p...

ABSTRACTAn important series of papers by Xiang, Anderson, and coworkers has established the strong correlation between phospholipid bilayer membrane permeability and the 1,9‐decadiene/water partition coefficient over a wide range of compounds, elevating the importance of Kdecadiene/w as a predi...

Toward total synthesis of miroestrols (miroestrol and deoxymiroestrol), 3-methyl-2-butenyl function (endo-C5 unit) on D ring as a carbon chain for C and E rings was prepared by elongation of the methyl group in α-methyl-α,β-unsaturated ketone unit, and 3,5-dinitrobenzoyl group was introduced ...

A method was developed for the residue analysis of aldicarb, its toxic metabolites (aldicarb sulfoxide and aldicarb sulfone), carbofuran and its metabolites (3-hydroxy- and 3-ketocarbofuran) in water. The procedure involved extracting with methylene chloride, initial separation and clean-up with...

A method is described for the determination of individual components of toxic aldicarb residues (aldicarb sulfoxide and aldicarb sulfone) in water and soils using a gas chromatographic method with the Hall electrolytic conductivity detector.Aldicarb and its metabolites were extracted from water ...

A magnetic particle based solid-phase enzyme linked immunosorbent assay (ELISA) for the determination of parts per billion levels of aldicarb and its sulfoxide and sulfone metabolites in water was developed. Sensitivity is estimated at 250 ppt based on a 90% B/Bo with results available in less t...

An analytical method for the determination of aldicarb, and its two major metabolites, aldicarb sulfoxide and aldicarb sulfone in fruits and vegetables is described. Briefly the method consisted of the use of a methanolic extraction, liquid–liquid extraction followed by solid-phase extraction c...

The new European chemical regulation (REACH) requires a short-term fish test for chemicals where the level of production exceeds 10 tons per year. For ethical reasons (3R-concept), an alternative to the acute fish test should be introduced to decrease the number of animal testing with fish. The ...