The heat capacities and enthalpy increments of strontium bismuth niobate SrBi2Nb2O9 (SBN) and strontium bismuth tantalate SrBi2Ta2O9 (SBT) were measured by the relaxation method (2–150 K), Calvet-type heat-conduction calorimetry (305–570 K) and drop calorimetry (773–1373 K). The temperature d...

A small set of novel 2,N6-disubstituted 1,2-dihydro-1,3,5-triazine-4,6-diamines was prepared possessing a flexible tether between the exocyclic nitrogen bonded to C-6 of the 1,2-dihydro-1,3,5-triazine-4,6-diamine heterocycle and the distal aryl ring. Three zones were varied in this series of com...

Identification and synthesis of novel 3-alkoxy-5-phenoxy-N-thiazolyl benzamides as glucokinase activators are described. Removal of an aniline structure of the prototype lead (2a) and incorporation of an alkoxy or phenoxy substituent led to the identification of 3-Isopropoxy-5-[4-(methylsulfonyl...

In our previous study, we reported a series of 1-hydroxy-2-phenyl-1H-imidazole-5-carboxylic acid derivatives that presented excellent in vitro xanthine oxidase inhibitory potency. As a continuation study, a series of 1-hydroxy-2-phenyl-1H-imidazole derivatives containing a pyridine moiety (4a-g ...

Tricarbonyl(η5-4-triethylsilyl-1-methylpentadienyl)iron(+1) hexafluorophosphate was prepared by the protonation of γ-endo tricarbonyl (η4-5-triethylsilyl-3,5-hexadien-2-ol)iron with hexafluorophosphoric acid. The cation reacts with H2O, CH3OH, NaBH3CN, PPh3, sodium dimethylmalonate and dimeth...

Treatment of diastereomeric (1R,5R,6R)- and (1R,5R,6S)-6-hydroxymethyl-2,6-dimethyl-7-oxabicyclo[3.2.1]oct-2-enes with Et3SiOTf leads to scalemic (1R,5R,6R)- and (1R,5R,6S)-6-hydroxy-2,6-dimethyl-8-oxabicyclo[3.3.1]non-2-enes.

α-Triethylsilyl-α-diazoacetone underwent a sequential aldolisation–deprotection–aldolisation process to access the 2-diazo-3-oxo-1,5-dihydroxy skeleton with significant diversity. The diazo group could be efficiently removed by treatment with rhodium acetate to afford the corresponding 5-hyd...

Eight new coordination polymers [Zn(L)(cis-1,2-CHDA)] (1), [Zn(L)(trans-1,3-CHDA)]·2.5H2O (2), [Zn(L)(cis-1,3-CHDA)]·H2O (3), [Cd(L)(cis-1,2-CHDA)]·3H2O (4), [Cd2(L)2(cis-1,2-CHDA)2]·3H2O (5), [Cd(L)(cis-1,3-CHDA)]·H2O (6), [Cd(L)(cis-1, 4-CHDA)]·5H2O (7) and [Cd(L)(cis-1,4-CHDA)] (8) were...

cis-1,3-Cyclohexanedicarboxylic acid (1,3-CHDA) monoesters were prepared in high overall yield and high enantiomeric purity using a three step process from cis/trans-1,3-CHDA. The asymmetry is induced by an enzymatic hydrolytic desymmetrization of a meso cis-1,3-CHDA diester. A judicious choice ...

This work involves the preparative separation of some isomeric dicarboxylic acids using pH-zone-refining counter-current chromatography (CCC), a relatively new preparative technique for the separation of ionizable compounds. The paper concentrates especially on the separation of a synthetic mixt...

Supramolecular assemblies of rac-1,3-cyclohexanedicarboxylic acid (1) with melamine (a), 1,2-bis(4-pyridyl)ethene (b); 1, 2-bis(4pyridyl)ethane (c) in the presence of Co(II), and 1,10-phenanthroline (d) along with Cu(II) and Ni(II), respectively 1a – 1d and 1d', have been reported. All the...

Novaluron, a novel chitin synthesis inhibitor (CSI), was tested against the various developmental stages of Tribolium castaneum (Herbst), at concentrations ranging from 0.1 to 100 ppm. It did not kill T. castaneum adults at these concentrations, but at 1.0 ppm it caused total mortality of third-...

Novaluron is a novel insect growth regulator that exhibits potent insecticidal activity against the Colorado potato beetle, Leptinotarsa decemlineata (Say). The predatory bug Podisus maculiventris (Say) is a natural enemy of the potato beetle found throughout North America, and is widely availab...

The present study aimed to determine the susceptibility of 32 R. (B.) microplus populations from Southeast, Midwest and South regions of Brazil, to fluazuron (2.5 mg/kg), administered topically (pour-on). Additionally, five populations (Southeast and Midwest regions) of the southern cattle tick ...

Benzoylurea insecticides are used for prevention and eradication of household or field pests. However, few studies have investigated their distribution and dissipation in soils and the effects on the soil microbial community. We examined the dissipation and vertical distribution of diflubenzuron...

Research to evaluate effective and selective insecticides through periodic screening is needed to strengthen diamondback moth (DBM) (Plutella xylostella L.) management. The efficacy of the insect growth regulator novaluron on DBM and effects on the parasitoids Diadegma sp. (Hym.: Ichneumonidae),...

Field trials were conducted in 2003 and 2004 to assess the effectiveness of novaluron (Rimon 10EC), a benzoylphenyl urea chitin synthesis inhibitor, for Colorado potato beetle, Leptinotarsa decemlineata (Say), management on potato. Foliar applications of novaluron did not significantly reduce nu...

Nanoparticles of novaluron, a water-insoluble insecticide, were prepared by a novel method, based on a direct conversion of O/W microemulsions containing pesticide and volatile solvents, into powders. The conversion of nanoparticles into powder was achieved by rapid evaporation of all the liquid...

The dissipations and residues of four pesticides in citrus, under field conditions, were measured using solid-phase extraction and LC-MS/MS. In the method validation, satisfactory results were obtained with fortified recoveries ranging from 80.6 to 113% and relative standard deviations ≤9.0%. I...

To accomplish consistent, long-term, integrated management (IPM) of the Colorado potato beetle, Leptinotarsa decemlineata (Say), research assessing the potential of novel, IPM-compatible insecticides is essential. Novaluron is a potent benzoylurea insecticide. In the present paper, we found that...