Showing papers in "Phosphorus Sulfur and Silicon and The Related Elements in 2019"
TL;DR: In this article, metal and non-metal catalysts are used in organic reactions with high activity, such as Nitrogen, oxygen, and sulfur containing heterocycles have a wide range of biological activities.
Abstract: Nitrogen, oxygen, and sulfur containing heterocycles have a wide range of biological activities. Metal and nonmetal catalysts are used in organic reactions with high activity. New strategie...
32 citations
TL;DR: In particular, high vapor pressures and toxicity of certain volatile organic solvents may cause significant environmental prob... as mentioned in this paper, and some of them are highly toxic, flammable, and even explosive.
Abstract: Some organic solvents are highly toxic, flammable, and even explosive. In particular, high vapor pressures and toxicity of certain volatile organic solvents may cause significant environmental prob...
30 citations
TL;DR: In this article, the sulfur dioxide surrogate DABSO is employed in a series of metal-catalyzed transformations to access useful sulfonyl-derived functional groups, such as sulfones, sulfonamides and sulfina.
Abstract: The sulfur dioxide surrogate DABSO is employed in a series of metal-catalyzed transformations to access useful sulfonyl-derived functional groups, such as sulfones, sulfonamides and sulfina...
22 citations
TL;DR: The synthesis and properties of the nitrilium derivatives of closo-dodecaborate [B12H12]2−, closodecaborate[B10H10] 2−, cobalt bis(dicarbollide) [3,3’-Co(1,2-C2B9H11)2]−, nido-decaborates [B 10H14]2...
Abstract: The synthesis and properties of the nitrilium derivatives of closo-dodecaborate [B12H12]2−, closo-decaborate [B10H10]2−, cobalt bis(dicarbollide) [3,3’-Co(1,2-C2B9H11)2]−, nido-decaborate [B10H14]2...
22 citations
TL;DR: In this paper, the authors investigated the chalcogen bond from an electrostatic perspective using Point-of-charge (PoC) approach using two molecular models, namely CX2 and H2X, where X = O, S, and Se.
Abstract: This study investigated the chalcogen bond from an electrostatic perspective using Point-of-Charge (PoC) approach. Two molecular models –namely CX2 and H2X, where X = O, S, and Se– were studied. 2D...
21 citations
TL;DR: In this article, 15 2-quinolone thiosemicarbazone derivatives of which eleven were new, were synthesized at room temperature, and the key intermediate was the quinolone carbaldehyde, from which thIosemicar...
Abstract: Fifteen 2-quinolone thiosemicarbazone derivatives of which eleven were new, were synthesized at room temperature. The key intermediate was the quinolone carbaldehyde, from which thiosemicar...
18 citations
TL;DR: A series of benzothiazole derivatives bearing a 1,3,4thiadiazole moiety were designed, synthesized and evaluated for their antibacterial, antifungal and antiviral activities as mentioned in this paper.
Abstract: A series of benzothiazole derivatives bearing a 1,3,4-thiadiazole moiety were designed, synthesized and evaluated for their antibacterial, antifungal and antiviral activities. The bioassay results ...
17 citations
TL;DR: The tetraamino-2-pyridyl(N/O)spirocyclotriphosphazenes (3a-3c) were identified by single crystal X-ray crystallography.
Abstract: The Cl exchange reaction of hexachlorocyclotriphosphazene, N3P3Cl6 (1), with one equimolar amount of sodium salt of N/O donor type bidentate ligand containing a 2-pyridyl pendant arm (2) afforded, regioselectively, the partly substituted 2-pyridyl(N/O)spirocyclotriphosphazene (3; with a yield of 65%) in THF. The reactions of 3 with excess pyrrolidine, morpholine and 1,4-dioxa-8-azaspiro[4,5]decane (DASD) led to the formation of the tetraamino-2-pyridyl(N/O)spirocyclotriphosphazenes (3a-3c) in high yields. Compound 3 also gave both tetrapiperidino (3d) and gem-bispiperidino (3e) products with excess piperidine. The structures of all the compounds were determined by elemental analyses, ESI-MS, FTIR, HSQC, HMBC and 1H, 13C, and 31P NMR techniques. The crystal structure of 3c was identified by single crystal X-ray crystallography. Besides, the compound 3e had one stereogenic P atom, and its chirality was verified by 31P NMR spectroscopy in the presence of (S)-(+)-2,2,2-trifluoro-1-(9’-anthryl)-ethanol...
17 citations
TL;DR: In this paper, an efficient, metal-free approach to C3 and C2 arylated benzothiophenes was proposed, which can be applied to a wide range of functionalized molecules.
Abstract: Functionalized benzothiophenes are important constructs found in molecules with wide ranging biological activity and in organic materials. An efficient, metal-free approach to C3 and C2 arylated an...
15 citations
TL;DR: An efficient and robust synthetic procedure was developed primarily for the synthesis of a precursor compound; 3-(trifluoromethyl)-5,6,7,8-tetrahydro-[1, 2, 4]triazolo[4, 3-a]pyrazine (11), from 2-c...
Abstract: An efficient and robust synthetic procedure was developed primarily for the synthesis of a precursor compound; 3-(trifluoromethyl)-5,6,7,8-tetrahydro-[1, 2, 4]triazolo[4,3-a]pyrazine (11), from 2-c...
15 citations
TL;DR: The α-hydroxyphosphonates constitute a class of organophosphorus compounds famous for their bioactive properties and can be functionalized due to their free hydroxy fu... as discussed by the authors.
Abstract: α-Hydroxyphosphonates constitute a class of organophosphorus compounds famous for their bioactive properties. α-Hydroxyphosphonates may easily be functionalized due to their free hydroxy fu...
TL;DR: In this paper, a series of tellurated azo compounds (4-HOC6H4N=N-Ar)TeBr3 and (4HOC 6H 4N=Ar)2TeBr2) were prepared by the reaction of the corresponding 2-(4-hydr) compounds.
Abstract: A series of tellurated azo compounds [ie (4-HOC6H4N=N-Ar)TeBr3 and (4-HOC6H4N=N-Ar)2TeBr2, where Ar=5-BrC6H3, 5-CH3C6H3 and 5-NO2C6H3] were prepared by the reaction of the corresponding 2-(4-hydr
TL;DR: New N-(5-methyl-4-phenylthiazol-2-yl)-2-(substituted thio)acetamides were synthesized and studied for their anticancer activity as discussed by the authors.
Abstract: New N-(5-methyl-4-phenylthiazol-2-yl)-2-(substituted thio)acetamides were synthesized and studied for their anticancer activity. The title compounds were procured by reacting 2-chloro-N-(5-...
TL;DR: In this paper, the authors summarized the recent achievements of electrochemical efficient and atom-economical catalytic methods for the formation of aromatic carbon-phosphorus bonds, and presented a mini-review.
Abstract: Recent achievements of electrochemical efficient and atom-economical catalytic methods for the formation of aromatic carbon-phosphorus bonds are summarized in this mini-review. Electrochemical reac...
TL;DR: A series of novel 1,2,4-triazole derivatives containing a pyrimidine moiety were synthesized and their fungicidal activities were evaluated in this paper, where the preliminary biological test indicated that s...
Abstract: A series of novel 1,2,4-triazole derivatives containing a pyrimidine moiety were synthesized and their fungicidal activities were evaluated. The preliminary biological test indicated that s...
TL;DR: An efficient and environmentally friendly process for α-aminophosphonates has been devised, through a one-pot three-component condensation of various aldehydes, amines and t... as mentioned in this paper.
Abstract: An highly efficient and environmentally friendly process for the synthesis of α-aminophosphonates has been devised, through a one-pot three-component condensation of various aldehydes, amines and t...
TL;DR: In this paper, the electronic and adsorption properties of dimethyl and methyl-ethyl ester molecules on a silicene nanoring (SiNR) were studied using first-principles calculations.
Abstract: The electronic and adsorption properties of dimethyl and methyl-ethyl ester molecules on a silicene nanoring (SiNR) are studied using first-principles calculations. The adsorption properties of dim...
TL;DR: Synthetic approaches to pentafluoro-λ6-sulfanylated pyridines, including meta-m and para-p-) pyridine substitution, are discussed in this article.
Abstract: Synthetic approaches to pentafluoro-λ6-sulfanylated pyridines, including meta- (m-) and para- (p-) pentafluoro-λ6-sulfanyl-substituted pyridines and ortho- (o-)-pentafluoro-λ6-sulfanyl-substituted ...
TL;DR: A simple and highly efficient multicomponent one-pot synthesis of a series of pharmaceutically interesting functionalized tetrahydropyridine phosphonate derivatives has been developed in this paper.
Abstract: A simple and highly efficient multicomponent one-pot synthesis of a series of pharmaceutically interesting functionalized tetrahydropyridine phosphonate derivatives has been developed based...
TL;DR: In this article, the authors studied the catalytic transformations of aromatic organosulfur compounds involving C-S bond cleavage in the cross-coupling arena, and found that little attention has been paid to the crosscoupled transformations of these compounds.
Abstract: Catalytic transformations of aromatic organosulfur compounds involving C–S bond cleavage have garnered increasing attention in the cross-coupling arena. However, little attention has been p...
TL;DR: In this paper, the α-hydroxyphosphonates have been in the focus of interest for many years due to their potential in biological activity, and not only α-HOPs are of general importance, but also the...
Abstract: α-Hydroxyphosphonates have been in the focus of interest for many years due to their potential in biological activity. Not only α-hydroxyphosphonates are of general importance, but also the...
TL;DR: Four cyclic dipeptides modeling the active site of thioredoxin reductase exhibited the significant antioxidant capacity, suggesting that an atomic environment around the Se–S bond is relevant to the reactivity toward a thiol substrate.
Abstract: Four cyclic dipeptides modeling the active site of thioredoxin reductase (TrxR), UU, CU, UC, and CC, where U and C represent selenocystine and cystine, respectively, were synthesized and their glut...
TL;DR: Compounds 4b, 4c, 4j and 4k exhibited the highest anti-viral activities against tobacco mosaic virus (TMV) when compared with the standard drug ningnanmycin.
Abstract: An efficient and eco-friendly protocol has been accomplished for a series of novel α-diaminophosphonates by a one-pot, three-component system via Kabachnik-Fields reaction of 4,4′-methylenedianilin...
TL;DR: In this article, the authors obtained nanopowders during the deposition of thin layers from Hexamethyldisiloxane (HMDSO) using low frequency plasma.
Abstract: In previous work, nanopowders have been obtained during the deposition of thin layers from Hexamethyldisiloxane (HMDSO) using low frequency plasma. The aim of this work is the study of the ...
TL;DR: In this paper, the flame retardancy of sorbitol-based epoxy resin is targeted, from bioepoxy 3% phosphorus-containing matrix samples were prepared, and only HB classification of UL-94 test was reachable.
Abstract: The flame retardancy of sorbitol-based epoxy resin is targeted. From the bioepoxy 3% phosphorus-containing matrix samples were prepared. Surprisingly, only HB classification of UL-94 test was reach...
TL;DR: Oxygen-sulfur substitution of rylene diimides optimizes the optoelectronic and physical properti... as mentioned in this paper, and is commonly used in the design of new organic semiconductors.
Abstract: Chalcogen substitution is commonly used in the design of new organic semiconductors. Oxygen-sulfur substitution of rylene diimides, in particular, optimizes the optoelectronic and physical properti...
TL;DR: In this paper, structural and functional biomimics have been used to learn from Nature how to create an efficient hydrogen-producing electrocatalyst or photocatalyst or hydrogen-generating electrolytic acid.
Abstract: To learn from Nature how to create an efficient hydrogen-producing electrocatalyst or photocatalyst, much attention has been paid to the investigation of structural and functional biomimics...
TL;DR: In this article, the active form of Co2+bpy was found to operate in cathode and anode spaces simultaneously, under both the oxidative and reductive conditions.
Abstract: Catalyst capable to operate in cathode and anode spaces simultaneously was found. Electrochemical regeneration of active form of catalyst Co2+bpy (1%) under oxidative as well as reductive condition...
TL;DR: The synthesis, spectral characteristics (IR and NMR), elemental analysis and X-ray crystal structure of phosphorothioic triamide SP(NC5H10)3 (1) and its dinuclear mercury(II) complex [Hg2(μ...
Abstract: The synthesis, spectral characteristics (IR and NMR), elemental analysis and X-ray crystal structure of phosphorothioic triamide SP(NC5H10)3 (1) and its dinuclear mercury(II) complex [Hg2(μ...
TL;DR: Most important examples of the application of the sulfinyl moiety as the crucial (essential) group both in chiral enantiomeric ligands/catalysts and in biologically active compounds are sel...
Abstract: Most important examples of the application of the sulfinyl moiety as the crucial (essential) group both in chiral enantiomeric ligands/catalysts and in biologically active compounds are sel...