Showing papers in "Journal of Chemical Research-s in 2019"
TL;DR: Bi(NO3)3.5H2O, Bi(TFA)3 and Bi(OTf)3 were found to be highly powerful and practical catalysts for the synthesis of azalactones under solvent free conditions with excellent yields and high chemoselectivity.
Abstract: Bi(NO3)3.5H2O, Bi(TFA)3 and Bi(OTf)3 were found to be highly powerful and practical catalysts for the synthesis of azalactones under solvent free conditions with excellent yields. In addition, high...
35 citations
TL;DR: A series of bimetallic dppfM(II) (dppf) = 1,1'bis (diphenyphosphino) ferrocene; M(I) = Pt and Pd) dithiocarbamate complexes is synthesized and characterized by spectroscopic methods and single-crystal methods as discussed by the authors.
Abstract: A series of bimetallic dppfM(II) (dppf = 1,1’-bis (diphenyphosphino) ferrocene; M = Pt and Pd) dithiocarbamate complexes is synthesized and characterized by spectroscopic methods and single-crystal...
11 citations
TL;DR: By using PCl3 as the chlorinating reagent, various carboxylic acids are converted into the corresponding acid chlorides in good yields as mentioned in this paper, which features high atom efficiency in which nearly all
Abstract: By using PCl3 as the chlorinating reagent, various carboxylic acids are converted into the corresponding acid chlorides in good yields. This method features high atom efficiency in which nearly all...
9 citations
TL;DR: In this paper, a one-pot strategy for the synthesis of flavonoids was proposed, based on C-H activation of salicylaldehyde followed by an insertion reaction with sulfoxonium ylides and cyclization.
Abstract: Rh(III)-catalyzed C–H activation of salicylaldehyde followed by an insertion reaction with sulfoxonium ylides and cyclization is applied to the synthesis of flavonoids. This one-pot strategy exhibi...
9 citations
TL;DR: An efficient cycloaddition reaction of cyanocyclopropanecarbonates and (E)-3-aryl-2-cyanoacrylates mediated by 1,8-diazabicyclo[5.4.0]undec-7-ene for the synthesis of highly functionalized...
Abstract: An efficient [3 + 2] cycloaddition reaction of cyanocyclopropanecarbonates and (E)-3-aryl-2-cyanoacrylates mediated by 1,8-diazabicyclo[5.4.0]undec-7-ene for the synthesis of highly functionalized ...
8 citations
TL;DR: In this article, the complex [Zn(CH3OH)4(MCA)2] (3-hydroxy-2-methylquinoline-4-carboxylic acid) was synthesized through hydrothermal reactions and characterized by single-crystal X-ray diffraction.
Abstract: The complex [Zn(CH3OH)4(MCA)2] (3-hydroxy-2-methylquinoline-4-carboxylic acid) has been synthesized through hydrothermal reactions and characterized by single-crystal X-ray diffraction. Its solid-s...
8 citations
TL;DR: The title compound, 6-(3-chloropropoxy)-4-(2-fluorophenylamino)-7-methoxyquinazoline, was synthesized by selective nucleophilic attack at C-1 of 1-bromo-3-loropropane by the potassium salt of 4-(...
Abstract: The title compound, 6-(3-chloropropoxy)-4-(2-fluorophenylamino)-7-methoxyquinazoline, was synthesized by selective nucleophilic attack at C-1 of 1-bromo-3-chloropropane by the potassium salt of 4-(...
7 citations
TL;DR: Two sets of novel indole-based thiosemicarbazone systems 8a−d and 9a-d were prepared by the Schiff base condensation reaction of indole carbaldehydes 4 and 6 as mentioned in this paper.
Abstract: Two sets of novel indole-based thiosemicarbazone systems 8a–d and 9a–d are prepared by the Schiff base condensation reaction of indole carbaldehydes 4 and 6 with a range of thiosemicarbazides 7a–d ...
6 citations
TL;DR: A series of 6-alkoxy-3-aryl [1,2,4]triazolo[4,3-b][1, 2,4,5] tetrazine derivatives is synthesized and evaluated for their antitumor activities as mentioned in this paper.
Abstract: A series of 6-alkoxy-3-aryl-[1,2,4]triazolo[4,3-b][1,2,4,5] tetrazine derivatives is synthesized and evaluated for their antitumor activities These compounds exhibit potent antiproliferative activ
6 citations
TL;DR: The Petasis borono-Mannich multicomponent reaction provides direct access to optically active α-amino esters with moderate to good yields and enantioselectivities.
Abstract: Enantioselective synthesis of α-amino esters have been achieved through the Petasis borono-Mannich multicomponent reaction using (R)-BINOL-derived catalysts with stable heteroaryl and alkenyl trifl...
5 citations
TL;DR: In this paper, Demethoxyaspidospermine was synthesized via the acylation of aspidospermidine with acetic anhydride, and the structure was determined by elemental analysis and Fourier transform infrared and nu...
Abstract: (+)-Demethoxyaspidospermine was synthesized via the acylation of aspidospermidine with acetic anhydride, and the structure was determined by elemental analysis and Fourier-transform infrared and nu...
TL;DR: In this article, four series of novel 1,3-thiazin(thiazol)-4-one derivatives were synthesized by Suzuki coupling and preliminary bioassays showed that most of the synthesized compounds exhibited good inhibitory activi...
Abstract: Four series of novel 1,3-thiazin(thiazol)-4-one derivatives were synthesized by Suzuki coupling. Preliminary bioassays showed that most of the synthesized compounds exhibited good inhibitory activi...
TL;DR: In this paper, an asymmetrical series of 1,2-disubstituted hydrazines, were prepared in a simple two-step procedure as a part of their continuing work in evaluating hydrophobic azine compounds as photoluminescent liquid crystalline materials.
Abstract: {1-[4-(n-Alkoxy)]-2-(4’-decyloxy)benzylidene}hydrazines (n-alkoxy = O(CH2)nH, n = 1–9, 12, 16 or 18), an asymmetrical series of 1,2-disubstituted hydrazines, were prepared in a simple two-step procedure as a part of our continuing work in evaluating hydrophobic azine compounds as photoluminescent liquid crystalline materials. The compounds were characterized spectroscopically and their liquid crystalline behaviour and luminescent properties were evaluated using polarized light optical microscopy, differential scanning calorimetry and X-ray powder diffraction techniques. The studies revealed that all of these compounds are liquid crystalline materials exhibiting photoluminescent properties in the crystalline and liquid crystal states.
TL;DR: In this article, carboxyl functionalized imidazolium halides are used as efficient bifunctional organocatalysts for the synthesis of cyclic carbonates from CO2 and epoxides under mild reaction conditi...
Abstract: Hydroxyl- and carboxyl-functionalized imidazolium halides are used as efficient bifunctional organocatalysts for the synthesis of cyclic carbonates from CO2 and epoxides under mild reaction conditi...
TL;DR: In this paper, convenient syntheses of quinazoline, benzothiazole, imidazole, and thiourea derivatives starting from 3-prop-2-enoyl isothiocyanate are described.
Abstract: Convenient syntheses of quinazoline, benzothiazole, thiadiazole, imidazole, and thiourea derivatives starting from 3-(thiophen-2-yl)prop-2-enoyl isothiocyanate are described. The structures of the ...
TL;DR: An efficient and rapid method was used for the synthesis of 10methyl-8H-spiro[benzo[5,6]chromeno[2,3-c]pyrazole-11,3′-indol]-2′(1′H)-one and 8-methyl-10-phenyl-10,11-dihydrospiro [pyrazolo[3,4-b]ben...
Abstract: An efficient and rapid method is used for the synthesis of 10-methyl-8H-spiro[benzo[5,6]chromeno[2,3-c]pyrazole-11,3′-indol]-2′(1′H)-one and 8-methyl-10-phenyl-10,11-dihydrospiro[pyrazolo[3,4-b]ben...
TL;DR: The bis-oxime of acenaphthenequinone and the mono-oxide of benzil have been sulfonated by reaction with 4-methylbenzenesulfonyl chloride and propylsulfonyll chloride as mentioned in this paper.
Abstract: The bis-oxime of acenaphthenequinone and the mono-oxime of benzil have been sulfonated by reaction with 4-methylbenzenesulfonyl chloride and propylsulfonyl chloride. The four sulfonated oximes were...
TL;DR: Based on density functional theory, exchange-correlation functionals which adequately describe a charge transport rate are proposed in this article, which is one of the key parameters determining the performance of organic electronic devices.
Abstract: Charge transport rate is one of the key parameters determining the performance of organic electronic devices. Based on density functional theory, exchange-correlation functionals which adequately a...
TL;DR: In this article, different drugs containing a basic nitrogen atom were crystallized with 2,4-dinitrophenol to study the mode of complexation in search of an antidote to 2.4-DIN poisoning.
Abstract: Different drugs containing a basic nitrogen atom were crystallised with 2,4-dinitrophenol to study the mode of complexation in search of an antidote to 2,4-dinitrophenol poisoning. The protonated f...
TL;DR: In this paper, Nitrogen-doped carbon dots were synthesized using citric acid monohydrate and glutathione as raw materials, which were characterized by multiple analytical techs.
Abstract: Nitrogen-doped carbon dots were synthesized using citric acid monohydrate and glutathione as raw materials. The synthesized nitrogen-doped carbon dots were characterized by multiple analytical tech...
TL;DR: In this article, the density functional theory at the B3LYP level using 6-311++G(2d,2p) basis set was used for the investigation of the geometry and electronic properties of the carvone.
Abstract: The density functional theory (at the B3LYP level using 6-311++G(2d,2p) basis set) was used for the investigation of the geometry and electronic properties of the carvone. The electronic properties...
TL;DR: An efficient protocol for the facile synthesis of a series of pyrido[2,3-d]pyrimidine derivatives has been developed applying Fe3O4−ZnO−NH2−PW12O40 nanocatalyst in water.
Abstract: An efficient protocol for the facile synthesis of a series of pyrido[2,3-d]pyrimidine derivatives has been developed applying Fe3O4–ZnO–NH2–PW12O40 nanocatalyst in water. This novel method has the ...
TL;DR: Mauveine chromophores and a family of phenosafranins have been extracted from the Colour Experience Museum black precipitate with boiling ethanol and separated by chromatography.
Abstract: Mauveine chromophores and a family of phenosafranins have been extracted from the Colour Experience Museum black precipitate with boiling ethanol and separated by chromatography. Phenosafranin (287...
TL;DR: In this article, a chiral fluorescent sensor was synthesized from a dibromide containing a tetraphenylethylene moiety and enantiomerically pure amino alcohols and an amine.
Abstract: Novel chiral fluorescent sensors are synthesized from a dibromide containing a tetraphenylethylene moiety and enantiomerically pure amino alcohols and an amine. The sensors are applied for the chir...
TL;DR: In this article, the synthesis and characterization of substituted (trifluoromethoxy, thiomethyl, and methoxy) phenyl quinolines is described.
Abstract: The synthesis and characterization of substituted (trifluoromethoxy, thiomethyl, and methoxy) phenyl quinolines is described. Dichlorobis(triphenylphosphine)palladium(II)-catalyzed Suzuki–Miyaura c...
TL;DR: A series of more than 20 multisubstituted pyrrolidine-2-carboxylates were synthesized via a one-pot cycloaddition of an araldehyde, an amino acid ester, and a chalcone catalyzed by I2/K2CO3 in this paper.
Abstract: A series of more than 20 multisubstituted pyrrolidine-2-carboxylates were synthesized via a one-pot cycloaddition of an araldehyde, an amino acid ester, and a chalcone catalyzed by I2/K2CO3 in tetr...
TL;DR: In this article, a simple and practical strategy for the synthesis of 2-substituted-3,4-dihydroquinazolines in which the ring closure reaction of 2 -aminobenzylamine with corresponding iminoester was described.
Abstract: This work presents a simple and practical strategy for the synthesis of 2-substituted-3,4-dihydroquinazolines in which the ring closure reaction of 2-aminobenzylamine with corresponding iminoester ...
TL;DR: In this article, reactions of 1,4,5-triaryl-2-(4-bromomethyl)phenyl-imidazoles with sodium azide in acetone give the corresponding azide derivatives, which on 1,3-dipolar cycloaddition with various terminal a...
Abstract: Reactions of 1,4,5-triaryl-2-(4-bromomethyl)phenyl-imidazoles with sodium azide in acetone give the corresponding azidomethyl derivatives, which on 1,3-dipolar cycloaddition with various terminal a...
TL;DR: In this paper, a new series of paeonol derivatives containing the 1,4-benzoxazinone and 1,2,3-triazole moieties were synthesized and evaluated for their cytotoxicity in vitro against human non-small cell lung can...
Abstract: A new series of paeonol derivatives containing the 1,4-benzoxazinone and 1,2,3-triazole moieties were synthesized and evaluated for their cytotoxicity in vitro against human non-small cell lung can...
TL;DR: A series of symmetric, silicon-linked organic fluorescent compounds with two electron-deficient 1,3,4-oxadiazole units were synthesized and characterized in this paper.
Abstract: A series of symmetric, silicon-linked organic fluorescent compounds with two electron-deficient 1,3,4-oxadiazole units were synthesized and characterized. The compounds possessed a V-shaped structu...