The application of the normal infra-red methods to the investigation and analysis of complicated technical detergents, such as alkyl sulphonates, alkyl-aryl sulphonates and monoalkyl sulphates, requires the conversion of these compounds into derivatives which are soluble in the organic solvents ...
Densities, ρ and viscosities, η of N,N-dimethyl-N-(3-sulfopropyl)cyclohexylammo-nium tosylate ([CyN1,1PrSO3H][Tos]) with water and methanol were measured, at temperatures from 303.15 K to 328.15 K with 5 K interval and 0.1013 MPa, as a function of [CyN1,1PrSO3H][Tos] molality (or mass fraction...
Aiming to assess the biological activities of synthetic 1,4-benzoquinones, we previously synthesized different libraries of benzoquinones with lipophilic and bulky alkyl- or aryl-substituents that inhibited 5-lipoxygenase (5-LO). The high potency of 4,5-dimethoxy-3-alkyl-1,2-benzoquinones on 5-L...
5-Lipoxygenase (5-LO) is a potential target for pharmacological intervention with various inflammatory and allergic diseases. Starting from the natural dual 5-LO/microsomal prostaglandin E2 synthase (mPGES)-1 inhibitor embelin (2,5-dihydroxy-3-undecyl-1,4-benzoquinone, 2) that suppresses 5-LO ac...
Bioassay-guided fractionation of roots and stems of Ardisia virens Kurz (Myrsinaceae) led to isolation of fourteen compounds, (2′R)-6-(2′-acetoxypentadecyl)-5-hydroxy-2-methoxy-1,4-benzoquinone (1), (2′R)-6-(2′-acetoxytridecyl)-5-hydroxy-2-methoxy-1,4-benzoquinone (2), (2′R)-6-(2′-acetoxyt...
Five new alkylated benzoquinones were isolated as methyl ether derivatives from a complex mixture containing alkylated hydroxy benzoquinones, obtained from the fruits of Maesa lanceolata. The structures of the benzoquinones, named, 2-acetoxy-5-methoxy-6-methyl-3-tridecyl-1, 4-benzoquinone, 2-met...
Three new antimony(III) iodide complexes with the N,N-diethylcarbamodithioic acid of formulae {[(SbI(Et2DTC)2)(I2)]n} (1), {[(Sb(Et2DTC)2)4 (SbI6) (I3)]n} (2) and {[SbI(Et2DTC)2]2} (3), (Et2DTCH: N,N-diethylcarbamodithioic acid, C5H11NS2) were synthesized from the reaction of antimony(III) iodid...
The osmotic and activity coefficients of aqueous solutions of diethylammonium based protic ionic liquids (PILs) were determined experimentally using vapor pressure osmometry in the concentration range of (~0.02 to ~0.5) mol·kg−1 at 298.15 K. Osmotic coefficient data show positive deviation from...
In this work, diethylammonium bromide (DABr) is used in planar perovskite solar cells to post-treat methylammonium iodide (MAPbI3) films to fabricate high quality 2D/3D perovskite hybrid films. DABr treatment not only induces the small crystals secondary growth into large crystals, which lead to...
A synthesis of maesaquinone [2,5-dihydroxy-3-(Z)-10′-pentadecenyl-6-methyl-1,4-benzoquinone] has been achieved in nine steps starting from 1,4,5-trimethoxymethyloxy-2-methoxybenzene which can be readily obtained by successive deprotection and MOM protection of one methoxyl group of 2,5-dimethox...
Structure of a benzoquinone, maesaquinone, isolated from Maesa lanceolata (Myrsinaceae), has been characterized as 2,5-dihydroxy-3-(Z)-10′-pentadecenyl-6-methyl-1,4-benzoquinone (1) by means of spectroscopic method. It has been found to exhibit in vitro cytotoxicity against several solid tumor ...
We present a theoretical study of the structure and electronic and optical properties of several L2–M compounds where L is bis(N-(5-(4-methoxyphenyl)-1,3,4-oxadiazol-2-yl)ethanimidamidato, or C11H11N4O2, and M = Co, Ni, Cu, Zn, Pd, Cd. Our calculations are carried out in the framework of the de...
A protocol of [3 + 3]-cycloaddition was proposed for the synthesis of 2H-1,4-thiazin-3(4H)-ones and thiomorpholine-3,5-diones from α-chlorohydroxamates and 1,4-dithiane-2,5-diol. This direct and practical method provides a novel and rapid approach for the synthesis of thiomorpholin-3-one deriva...
We present a theoretical study of the structure and electronic and optical properties of several L2–M compounds where L is bis(N-(5-(4-methoxyphenyl)-1,3,4-oxadiazol-2-yl)ethanimidamidato, or C11H11N4O2, and M = Co, Ni, Cu, Zn, Pd, Cd. Our calculations are carried out in the framework of the de...
A protocol of [3 + 3]-cycloaddition was proposed for the synthesis of 2H-1,4-thiazin-3(4H)-ones and thiomorpholine-3,5-diones from α-chlorohydroxamates and 1,4-dithiane-2,5-diol. This direct and practical method provides a novel and rapid approach for the synthesis of thiomorpholin-3-one deriva...
We present a theoretical study of the structure and electronic and optical properties of several L2–M compounds where L is bis(N-(5-(4-methoxyphenyl)-1,3,4-oxadiazol-2-yl)ethanimidamidato, or C11H11N4O2, and M = Co, Ni, Cu, Zn, Pd, Cd. Our calculations are carried out in the framework of the de...
A protocol of [3 + 3]-cycloaddition was proposed for the synthesis of 2H-1,4-thiazin-3(4H)-ones and thiomorpholine-3,5-diones from α-chlorohydroxamates and 1,4-dithiane-2,5-diol. This direct and practical method provides a novel and rapid approach for the synthesis of thiomorpholin-3-one deriva...
We present a theoretical study of the structure and electronic and optical properties of several L2–M compounds where L is bis(N-(5-(4-methoxyphenyl)-1,3,4-oxadiazol-2-yl)ethanimidamidato, or C11H11N4O2, and M = Co, Ni, Cu, Zn, Pd, Cd. Our calculations are carried out in the framework of the de...
A protocol of [3 + 3]-cycloaddition was proposed for the synthesis of 2H-1,4-thiazin-3(4H)-ones and thiomorpholine-3,5-diones from α-chlorohydroxamates and 1,4-dithiane-2,5-diol. This direct and practical method provides a novel and rapid approach for the synthesis of thiomorpholin-3-one deriva...
We present a theoretical study of the structure and electronic and optical properties of several L2–M compounds where L is bis(N-(5-(4-methoxyphenyl)-1,3,4-oxadiazol-2-yl)ethanimidamidato, or C11H11N4O2, and M = Co, Ni, Cu, Zn, Pd, Cd. Our calculations are carried out in the framework of the de...
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