The photosolvolysis of several 9-fluorenol derivatives (–7) substituted at the 9-position has been studied in aqueous CH3CN and CH3OH solutions. The purpose of the study was to examine structure reactivity for photodehydroxylation of 9-fluorenol derivatives, giving rise to 9-fluorenyl cations, ...
Сyclic voltammetry, chronoamperometry, coulometry, electrolysis, digital simulation, quantum chemical calculations of 9-fluorenol as an example, were used to show that the electroreduction of aryl derivatives of methanol in 0.1 M Bu4NClO4/DMF proceeds via the ECE mechanism (including the stages...
A series of new 4- or 5-substituted pyrrolidine derivatives of 5-[1-(2-methoxymethylpyrrolidinyl)sulfonyl]isatin bearing additional n-butyl or 4-fluorobutyl groups at the isatin nitrogen were prepared and their inhibitory activities have been tested against caspases-3 and -7, which are known to ...
Copper-catalyzed CH sulfonylation of 8-aminoquinoline scaffolds in the unusual C5 position was developed. The protocol using inexpensive CuI as the catalyst and commercially available aryl sulfonyl chlorides as the sulfonylation reagents, shows broad substrate scope, producing moderate to good y...
2-(4′-Substituted phenyl)-Δ1-pyrrolines can be prepared conveniently from the hydrochlorides of 4′-substituted-4-aminobutyrophenones or their cyclization products, the corresponding Δ1-pyrrolines hydrochlorides, by alkalinization. The hydrochlorides were prepared by the hydrolyses of 4′-sub...
Arenes and heteroarenes carrying a halogen and an amino- or hydroxy group have been converted to allylamino- or allyloxy-furyl-(hetero)arenes. These compounds underwent IMDAF reactions to give complex fused polycyclic heterocycles. The reactivity of the substrates was highly dependent on the det...
4-Semifluoroalkoxybiphenyl derivatives 1 and 2(n) (n = 4–6, 8 and 10) were designed, synthesized and their physic-chemical properties were examined. The effects of chemical structure on liquid crystalline and gelation properties were investigated. The clear point for 2(n) declines as the carbon...
In this article a new coated platinum Cu2+ ion selective electrode based on 2-((2-(2-(2-(2-hydroxy-5-methoxybenzylideneamino)phenyl)disufanyl)phenylimino) methyl)-4-methoxyphenol Schiff base (L1) as a new ionophore is described. This sensor has a wide linear range of concentration (1.2 × 10−7–...
Oligo and polyesters were prepared from epoxidized oleic acid (EOA) and methyl oleate (EMO) in polymerization reaction with cis-1,2-cyclohexanedicarboxylic anhydride (CH) and triethylamine (TEA) as the initiator at 165 °C for 3 h. In order to increase the molecular weight of the products, a sma...
Utilizing the mixed-ligand strategy, six new homochiral coordination polymers based on enantiopure (1R,2R)-1,2-cyclohexanedicarboxylic acid and varied auxiliary bipyridyl ligands, [Zn3(L)2(OH)2] (1), [Cu3(HL)2(L)2(bpy)3]·4H2O (2), [M(L)(bpe)2(H2O)2]·H2O (M = Co, 3; Ni, 4; Cd, 5), [Ni(L)(bpa)(H...
An analysis of the products of the reaction of N3-phenylbenzamidrazone with cis-1,2-cyclohexanedicarboxylic anhydride at various temperatures is presented. The identification of the reaction products is carried on with the support of computational techniques. The most stable conformers of the is...
Conversion of trans-1,2-cyclohexanedicarboxylic acid derivatives into dianions under the action of strong bases leads to dramatic conformational changes: a conformer with diaxial position of carboxylate groups becomes predominant. Thus the trans-1,2-cyclohexanedicarboxylic acid moiety can be use...
Possible human health effects of phthalate plasticizers have been intensely discussed during the last decade. Di(2-ethylhexyl) phthalate (DEHP), the phthalate acid ester with the largest production volume worldwide, has been substituted by new compounds like Diisononyl 1,2-cyclohexanedicarboxyli...
1,2-Cyclohexane dicarboxylic acid diisononyl ester is also known as diisononyl cyclohexane-1,2-dicarboxylate (DINCH) is a complex mixture of the hydrogenation products of diisononyl benzene-1,2-dicarboxylate (DINP). They are the new generation plasticizers used instead of the dialkyl benzene-1,2...
A new pimarane diterpene, 18-malonyloxy-9-epi-ent-isopimarol, was isolated from the aerial parts of Calceolaria glandulosa. The structure of the new compound was established by spectroscopic evidence, chemical transformations and X-ray analysis.
BackgroundDelivery of siRNA has been one of the major challenges to application of siRNA therapeutics. Polymer/lipid hybrid nanoparticles (HNPs) combine the advantages of both polymeric and liposomal carriers with remarkable properties for efficient siRNA encapsulation and delivery.
N-Propargyl amino esters are useful starting materials in a variety of settings. General reductive amination conditions for N-(3-trimethylsily)propargylation of amino esters have been developed. These conditions demonstrated greater tolerance for nucleophilic side chains (amines and alcohols) th...
Short chain 4-alkyl-branched fatty acids are character impact compounds of the flavor of sheep and goat milk and meat. Due to their methyl or ethyl branches these volatile fatty acids are chiral, and both enantiomers are characterized by different aroma intensities. Recently, it was found that 4...
A mixture of low grade industrial oils such as acidic crude palm oil (ACPO) and sludge palm oil (SPO) was used for biodiesel production. A novel organic acid, (1R)-(–)-camphor-10-sulfonic acid (10-CSA), was introduced as a catalyst for esterification reaction. 10-CSA shows high activity as a ca...
The reaction of a hydroxylated base with 3-chloro-2-methyl-6-methylene 1,7-octadiene in the presence of a palladium complex and a quaternary ammonium salt gives a novel tetraene : 2-methyl-6-methylene-1,3E,7-octatriene, which is a new C10 terpene synthon. A novel access to pseudo-ionone is also ...
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