Showing papers in "Phosphorus Sulfur and Silicon and The Related Elements in 2016"
TL;DR: In this paper, a rel-(6R,7R)-2-oxo-7-phenyl-3,5,6,7-tetrahydro-2H-thiopyrano[2,3-d]thiazole-6-carbaldehydes were synthesized via regio- and diastereoselective hetero-Diels-Alder reaction of 5-arylidene-4-thio...
Abstract: Novel rel-(6R,7R)-2-oxo-7-phenyl-3,5,6,7-tetrahydro-2H-thiopyrano[2,3-d]thiazole-6-carbaldehydes were synthesized via regio- and diastereoselective hetero-Diels-Alder reaction of 5-arylidene-4-thio...
26 citations
TL;DR: N-(4-acetylphenyl)-N′-(2-nitrobenzoyl)-thiourea has been synthesized in high yield under PEG-400 as the phase-transfer catalyst and its the compound structure was determined by single crystal X-ray.
Abstract: N-(4-acetylphenyl)-N′-(2-nitrobenzoyl)-thiourea has been synthesized in high yield under PEG-400 as the phase-transfer catalyst and its the compound structure was determined by single crystal X-ray...
25 citations
TL;DR: An efficient and environmentally friendly protocol has been developed for the synthesis of novel α-aminophosphonates in good to excellent yields by a one-pot, three-component reaction of an amine, an aldehyde, and diphenyl phosphite using polyethylene glycol as a green solvent at 80°C via Kabachnik-Fields reaction.
Abstract: An efficient and environmentally friendly protocol has been developed for the synthesis of novel α-aminophosphonates in good to excellent yields (76–92%) by a one-pot, three-component reaction of a...
25 citations
TL;DR: The NHC PH adduct IMes were used to form one and two-centered coordination compounds with tungsten and boron atoms using one or two lone pairs of phosphorus atom as mentioned in this paper.
Abstract: The NHC PH adduct IMes: PH was used to form one- and two-centered coordination compounds with tungsten and boron atoms using one or two lone pairs of phosphorus atom.
25 citations
TL;DR: The synthesis of 2-(substituted phenyl)-2-oxoethyl 4-(pyrimidin-2-yl)piperazin-1-carbodithiodate (A1-A24) derivatives and 2-(4-substitized thiazol-2 -ylamino)-2 -oxoxyethyl 4-pyridine 2-yl (pyridin 2 -2 -yl)-piperamide (P2-PiperazIN-1)-1-car carbodithienate (1-
Abstract: The synthesis of 2-(substituted phenyl)-2-oxoethyl 4-(pyrimidin-2-yl)piperazin-1-carbodithiodate (A1-A24) derivatives and 2-(4-substituted thiazol-2-ylamino)-2-oxoethyl 4-(pyrimidin-2-yl)piperazin-...
25 citations
TL;DR: A series of diethyl/ethylphenyl {2-(benzo[d]thiazol-2-yl)phenylamino}phosphonates and phosphinates were synthesized under microwave irradiation and neat conditions via Kabachnik-Fields reaction in this article.
Abstract: A series of diethyl/ethylphenyl {2-(benzo[d]thiazol-2-yl)phenylamino}phosphonates and phosphinates were synthesized under microwave irradiation and neat conditions via Kabachnik-Fields reaction in ...
22 citations
TL;DR: A simple method was developed for the synthesis of 3-chalcogen indoles via iodine-promoted direct 3-selanyl- and 3-sulfenylation of indoles with dichalcogenides that has the merits of environmental friendliness, easy operation, wide substrate scope and mild reaction conditions.
Abstract: GRAPHICAL ABSTRACT Abstract A simple method was developed for the synthesis of 3-chalcogen indoles via iodine-promoted direct 3-selanyl- and 3-sulfenylation of indoles with dichalcogenides. The reaction was carried out smoothly in EtOH under air at room temperature, selectively giving a series of 3-chalcogen indoles bearing different functional groups in good to excellent yields. The procedure has the merits of environmental friendliness, easy operation, wide substrate scope and mild reaction conditions.
20 citations
TL;DR: In this paper, the reduction of mainly cyclic phosphine oxides and triaryl derivatives is surveyed using different silane-based deoxygenation methods, and the reduction is discussed.
Abstract: The deoxygenation of different phosphine oxides is an important issue. In this minireview, the reduction of mainly cyclic phosphine oxides and triaryl derivatives is surveyed using different silane...
18 citations
TL;DR: In this paper, atroposelective synthesis of axially chiral biaryls mediated by palladium complexes of chiral phosphorus ligands is discussed and compared with the literature data.
Abstract: Atroposelective synthesis of axially chiral biaryls mediated by palladium complexes of chiral phosphorus ligands is discussed. Analysis of the literature data allowed us to compare the activity and...
18 citations
TL;DR: Therapies of the future, gene therapy for transient production of bioscavengers and cell therapy for neuronal regeneration are still in infancy for practical medical uses, which implies identification of unkown OP targets and toxicity mechanisms, research on drug nanocarriers and alternative routes for delivery.
Abstract: Organophosphorus nerve agents (OPs) are potent irreversible inhibitors of acetylcholinesterase (AChE) They cause a major cholinergic syndrome Most progress in medical counter-measures of OP poiso
17 citations
TL;DR: In this paper, the reactivity of organonickel sigma-complex [NiBr(Mes)(bpy)], where Mes = 2,4,6-trimethylphenyl, bpy = 2.2'-bipyridine towards phenylphosphine (PhPH2) has been investigated.
Abstract: The reactivity of organonickel sigma-complex [NiBr(Mes)(bpy)], where Mes = 2,4,6-trimethylphenyl, bpy = 2,2’-bipyridine towards phenylphosphine (PhPH2) has been investigated. It was found that this interaction leads to secondary mesitylphenylphosphine and dimesitylphosphine by formation of new carbon-phosphorus bond involving mesityl fragment of starting organonickel sigma-complex.
TL;DR: In this paper, a one-pot synthesis of chromene derivatives from the three-component reaction of triphenylphosphine and dialkyl acetylenedicarboxylate and 2-hydroxybenzaldehyde derivatives is presented.
Abstract: A convenient one-pot synthesis of chromene derivatives from the three-component reaction of triphenylphosphine and dialkyl acetylenedicarboxylate and 2-hydroxybenzaldehyde derivatives in the presen...
TL;DR: The highest acceleration (more than 11 times in comparison with the reaction in the absence of amphiphile) has been reached in the case of dicationic amphiphiles with three hydrophobic tails.
Abstract: The series of novel pyrimidine-containing amphiphiles were examined as catalysts for cleavage of phosphonates having various hydrophobicities. Kinetic data showed marked substrate specificity of three different types (i) inhibition for both substrates, (ii) catalysis for more hydrophobic phosphonate and inhibition for less hydrophobic phosphonate, and (iii) catalysis for both substrates. The highest acceleration (more than 11 times in comparison with the reaction in the absence of amphiphile) has been reached in the case of dicationic amphiphile with three hydrophobic tails.
TL;DR: Vinyl selenides, sulfides and tellurides as discussed by the authors represent important compounds in organic chemistry for their relatively easy accessibility and synthetic utility, and they are relatively easy to synthesize.
Abstract: Vinyl selenides, sulfides and tellurides surely represent important compounds in organic chemistry for their relatively easy accessibility and synthetic utility. More than the others vinyl selenide...
TL;DR: In this paper, a supported acidic catalyst was easily prepared via anchoring imidazolium salt-based ionic liquid onto multiwalled carbon nanotube by covalent bonds.
Abstract: A supported acidic catalyst was easily prepared via anchoring imidazolium salt-based ionic liquid onto multiwalled carbon nanotube by covalent bonds. This novel immobilized acidic ionic liquid effectively catalyzed the one-pot synthesis of α-aminophosphonates from the reaction of amines and aldehydes with diethyl phosphite. The catalyst can be easily recovered and reused without appreciable change in its efficiency.
TL;DR: The 1:1 imine intermediate generated by the addition of a primary amine to cyclohexanone trapped by N-isocyaniminotriphenylphosphorane (NICITPP) in the presence of aromatic carboxylic acids and the...
Abstract: The 1:1 imine intermediate generated by the addition of a primary amine to cyclohexanone trapped by N-isocyaniminotriphenylphosphorane (NICITPP) in the presence of aromatic carboxylic acids and the...
TL;DR: Barrelene-type dialumanes bearing bulky aryl substituents were synthesized and their reactivity as synthetic equivalents of the corresponding dialumenes was elucidated as discussed by the authors.
Abstract: Barrelene-type dialumanes bearing bulky aryl substituents were synthesized, and their reactivity as synthetic equivalents of the corresponding dialumenes was elucidated. Reaction of the barrelene-t...
TL;DR: In this article, a metal-catalyzed electrochemical oxidative phosphonation of hetaryl-azoles (benzoxazoles, benzothiazole and others) with dialkyl-H-phosphonate was developed.
Abstract: Metal-catalyzed electrochemical oxidative phosphonation of hetaryl-azoles (benzoxazoles, benzothiazole and others) with dialkyl-H-phosphonate was developed. Joint electrochemical oxidation of azole...
TL;DR: In this article, the application of important organophosphorus ligand-based complex catalysts in potentially environmentally benign processes was overviewed, in particular, the focus was put on the phosphoorganic s...
Abstract: The application of important organophosphorus ligand-based complex catalysts in potentially environmentally benign processes was overviewed. In particular, the focus was put on the phosphoorganic s...
TL;DR: Conjugate addition of diisobutyl phosphite to activated alkenes under PBu3 catalysis affords corresponding phosphonates in high yields within short reaction times.
Abstract: Conjugate addition of diisobutyl phosphite to activated alkenes under PBu3 catalysis affords corresponding phosphonates in high yields within short reaction times.
TL;DR: In this paper, the conversion of various epoxides to the corresponding thiiranes was carried out successfully with alumina-immobilized thiourea at room temperature.
Abstract: Solvent-free conversion of various epoxides to the corresponding thiiranes was carried out successfully with alumina-immobilized thiourea at room temperature. The reactions were completed within 2–...
TL;DR: The solution reaction of Cu(CH3CN)4(PF6) with a NN ligand 2-(2′-quinolyl)benzimidazole and a sterically bulky P ligand tris(2-methylphenyl)phosphine facilely yielded the three-coordinate copper(I)...
Abstract: The solution reaction of Cu(CH3CN)4(PF6) with a NN ligand 2-(2′-quinolyl)benzimidazole and a sterically bulky P ligand tris(2-methylphenyl)phosphine facilely yielded the three-coordinate copper(I) ...
TL;DR: Asymmetric phospha-Diels-Alder reactions involving new 3,4,5-triaryl-1-(+)-neomenthyl-1,2-diphosphole bearing a chiral auxiliary with maleic acid derivatives with diastereoselectivities up to 91% were studied in this article.
Abstract: Asymmetric phospha-Diels-Alder reactions involving new 3,4,5-triaryl-1-(+)-neomenthyl-1,2-diphosphole bearing a chiral auxiliary with maleic acid derivatives with diastereoselectivities up to 91% a...
TL;DR: In this article, a variety of rhodanine derivatives were synthesized via a three-component reaction of carbon disulfide, amines, and dialkyl acetylenedicarboxylate in polyethylene glycol under conventional stirring.
Abstract: A variety of rhodanine derivatives were synthesized via a three-component reaction of carbon disulfide, amines, and dialkyl acetylenedicarboxylate in polyethylene glycol under conventional stirring...
TL;DR: In this article, stable phosphonium salts were synthesized by the phosphorylation of a series of ω-haloalkylcarboxylic acids with triphenylphosphine.
Abstract: Stable phosphonium salts were synthesized by the phosphorylation of a series of ω-haloalkylcarboxylic acids with triphenylphosphine. In a second step the resulting phosphonium salts have been treat...
TL;DR: In this paper, a new carbon paste electrode is described, which contains the room temperature ionic liquid tri(tert-butyl)(decyl)phosphonium tetrafluoroborate as a binder.
Abstract: A new carbon paste electrode is described, which contains the room temperature ionic liquid tri(tert-butyl)(decyl)phosphonium tetrafluoroborate as a binder. The advantages of this electrode are a h...
TL;DR: In this article, 3-amino-4-aminoximidofurazan (AAOF) with Wittig-Horner reagents, trialkylphosphites, tridisialkylaminophosphines as well as the thiating Lawesson and Japanese reagents were studied.
Abstract: Reactions of 3-amino-4-aminoximidofurazan (AAOF) with Wittig–Horner reagents, trialkylphosphites, trisdialkylaminophosphines as well as the thiating Lawesson and Japanese reagents were studied. Elemental analysis and spectroscopic measurements were in good accord with the structures postulated for the new products. The antitumor activities of certain selected new compounds were screened, in vitro, against a panel of five (liver; HepG2; breast; MCF-7; lung; A549; colon; HCT116; and prostate PC3) human solid tumor cell lines.
TL;DR: In this article, the interaction of hydrazine (N₂H₄) molecule with pristine and Si-doped aluminum nitride nano-cage was investigated using the density functional theory calculations.
Abstract: The interaction of hydrazine (N₂H₄) molecule with pristine and Si-doped aluminum nitride (Al₁₂N₁₂) nano-cage was investigated using the density functional theory calculations. The adsorption energy of N₂H₄ on pristine Al₁₂N₁₂ in different configurations was about -1.67 and -1.64 eV with slight changes in its electronic structure. The results showed that the pristine nano-cage can be used as a chemical adsorbent for toxic hydrazine in nature. Compared with very low sensitivity between N₂H₄ and Al₁₂N₁₂ nano-cage, N₂H₄ molecule exhibits high sensitivity toward Si-doped Al₁₂N₁₂ nano-cage so that the energy gap of the Si-doped Al₁₂N₁₂ nano-cage is changed by about 31.86 and 37.61 for different configurations in the SiAlmodel and by about 26.10 in the SiNmodel after the adsorption process. On the other hand, in comparison with the SiAlmodel, the adsorption energy of N₂H₄ on the SiNmodel is less than that on the SiALmodel to hinder the recovery of the nano-cage. As a result, the SiNAl₁₂N₁₁ is anticipated to be a potential novel sensor for detecting the presence of N₂H₄ molecule. © 2016 Taylor & Francis Group, LLC.
TL;DR: In this article, a one pot three-component nano Gd2O3 catalyzed neat reaction of 2-morpholinoethanamine and dimethylphosphite with various salicylaldehydes under microwave irradiation afforded a series of new α-aminophosphonates in high yields.
Abstract: GRAPHICAL ABSTRACT ABSTRACT A one pot three-component nano Gd2O3 catalyzed neat reaction of 2-morpholinoethanamine and dimethylphosphite with various salicylaldehydes under microwave irradiation afforded a series of new α-aminophosphonates in high yields. The synthesized compounds were characterized by FT-IR, (1H, 13C, 31P)-NMR, and mass spectral methods. The antioxidant activity of these compounds was evaluated against DPPH, NO, and H2O2 methods and found that the compound Dimethyl (2-hydroxy-5-nitrophenyl) (2-morpholinoethylamino) methylphosphonate (4h) has higher antioxidant activity than the corresponding standards.
TL;DR: In this article, four new organotin(IV) complexes with 2-hydroxynaphthaldehyde-N(4)-ethylthiosemicarbazone [(H2DNET), (1)] of the type [MeSnCl(DNET] (2), [BuSnCl[DNET)] (3), [PhSnCl{DNET} (4), and [Ph2Sn{D NET] (5) have been synthesized by the direct reaction of H2D NET (1) with organotin (IV) chloride(s)
Abstract: Four new organotin(IV) complexes with 2-hydroxynaphthaldehyde-N(4)-ethylthiosemicarbazone [(H2DNET), (1)] of the type [MeSnCl(DNET] (2), [BuSnCl(DNET)] (3), [PhSnCl(DNET)] (4) and [Ph2Sn(DNET] (5) have been synthesized by the direct reaction of H2DNET (1) with organotin(IV) chloride(s) in the presence of potassium hydroxide in absolute methanol. All the compounds were characterized by elemental analyses, molar conductivity, UV-Vis, IR, 1H, 13C and 119Sn NMR spectral studies. The molecular structure of ligand (1) has been confirmed by X-ray single crystal diffraction. Spectroscopic data clearly suggested that Sn(IV) centre is coordinated with the ONS tridentate ligand (H2DNET) and exhibits a five-coordinate geometry in solution. Antibacterial studies were carried out in vitro against four bacterial strains. All organotin(IV) compounds (2–5) showed good activity against various bacteria but lower activity than the reference drug (Ciprofloxacin). The results demonstrate that organic groups attached t...