New 18 triazine–stilbene fluorescent brighteners containing the phenolic antioxidant have been synthesized. The obtained compounds (7a–i and 8a–i) were characterized by the analysis of proton NMR spectrum and confirmed by UV spectrum. The physical properties of the new compounds were performe...

Mercury-based lighting systems have ruled the global market for more than a decade. It did not take much longer to replace their predecessors, viz. incandescent bulbs, due to magnified advantages of fluorescent lamps that relied entirely on mercury-excitation. The cold-emission with superior eff...

Fluorescent brighteners based on dicarboxylic acid derivatives are compounds of the benzoxazole type, synthesized by a simple reaction using polyphosphoric acid. The obtained compounds (4a–c, 6a–c, 8a–c) were characterized by the analysis of proton NMR spectrum and confirmed by UV spectrum. T...

Treatment of neodymium trichloride (NdCl3) in tetrahydrofuran with 3 equiv of sodium N,N-dimethylaminodiboranate, Na[(H3B)2NMe2], which we will refer to as NaL, followed by solvent removal and extraction with pentane, affords a solution of the trisubstituted product NdL3(thf) in excellent yield....

Salt hydrates can be used as phase change materials for thermal energy storage. Critical technical challenges for their widespread deployment include poor cycling stability, large supercooling, and low thermal conductivity. In this work, numerous enhancement techniques are reviewed. Related to s...

We performed a series of toxicity studies on the safety of 6′-sialyllactose (6′-SL) sodium salt as a food ingredient. 6′-SL sodium salt, up to a maximum dose of 5000 μg/plate, did not increase the number of revertant colonies in five strains of Salmonella typhimurium in the presence or absen...

This study determined the effect of the incorporation of micronized salt on physicochemical, yield and consumer's sensory characteristics of beef burger. The micronized salt was obtained by sieving the commercial salt in a 60-mesh stainless steel sieve. The commercial (regular salt) and mic...

Alpha-lipoic acid (ALA) oral supplements were used in many pathologies associated with increased oxidative stress. Although only R-ALA is considered the biologically active form, R,S-ALA is used in therapeutic applications even showing poor water solubility. The aim of this work was to study the...

A convenient one pot method for the synthesis of 2,5-disubstituted 1,3,4-oxadiazoles from acids and acyl hydrazides is reported. Acid activation with CDI, followed by coupling with the desired acylhydrazide and dehydration in the same pot with Ph3P and CBr4 affords the corresponding 1,3,4-oxadia...

The condensation of 6-amino-2-thiouracil 1 with aromatic aldehydes afforded azomethine derivatives 3a,b. The formed azomethines underwent [4+2] cycloaddition with enaminones 4a–c and enaminonitrile 9 to form the corresponding condensed pyrimidines 8a–f and 11a,b, respectively. On the other han...

We describe a convenient method for the synthesis of multi-substituted allenes from SN2′ substitution reactions organoaluminum with propargyl acetates: The SN2′ substitution reaction of organoaluminum (0.4 mmol) with propargyl acetates (0.5 mmol) mediated by PdCl2(dppf) (1 mol%) at 60 °C in T...

The selective cleavage of the N-propargyl group from sulfonamides and amides under ruthenium catalysis is described. The reaction tolerates a broad range of functional groups, and the desired products were obtained in 10–95% yield.

New N-propargyl tetrahydroquinolines 6a-g have been synthesized efficiently through the cationic Povarov reaction (a domino Mannich/Friedel-Crafts reaction), catalyzed by Indium (III) chloride (InCl3), from the corresponding N-propargylanilines preformed, formaldehyde and N-vinylformamide, with ...

The annulation of propargyl amines with electron-deficient alkynes in the presence of silver salts affording pyridines and pyrroles has been developed. The chemoselective [4+2] or [3+2] annulation approach to pyridines or pyrroles depends on the structures of propargyl amines and the different r...

A variety of mono- and disubstituted phenols are alkylated with propargyl bromide to give phenyl 2-propynyl ethers, which were further coupled with aryl iodides under Sonogashira reaction conditions to give 3-phenoxy-1-aryl-1-propyne derivatives. The latter compounds underwent an initial Claisen...

Polysaccharide arabinogalactan (AG) has been modified by triazolyl functions via the copper-catalyzed 1,3-dipolar addition of azides to propargyl ethers. A range of new AG triazolo derivatives bearing benzyl, 4-vinylbenzyl, 1-naphthylmethyl, (1-vinylimidazol-2-yl)methyl, (1-ethylimidazol-2-yl)me...

Anisole, phenyl ethyl ether (PEE) and benzyloxybenzene (BOB) with different oxygen substituents were selected as coal-related phenyl ether model compounds, and their pyrolysis behaviors at 500, 600 and 700 °C on a fixed-bed reactor were compared. The pyrolysis products were analyzed by gas chro...

Propargyl ethers and amines are effectively depropargylated to the parent alcohols or amines via a C−O/C−N bond cleavage catalyzed by 10% Pd/C in water. This simple, facile, and inexpensive methodology could be utilized for the selective removal of propargyl groups from a variety of aryl ethers ...

The reactivity of indole based bis-propargyl ethers 4a-4g under Garratt-Braverman condition (KOBut in refluxing toluene) has been studied. Interestingly, these propargyl systems with one arm attached with substituted 3-indolyl derivatives leaving the other arm unsubstituted produced the 3,4-fura...

Background: Vehicle-controlled studies have demonstrated the efficacy and safety of tacrolimus ointment for patients with atopic dermatitis. Objective: This study was undertaken to compare 0.03% and 0.1% tacrolimus ointment with 0.1% hydrocortisone-17-butyrate ointment, a midpotent to potent top...