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Vladimir Ya. Lee Shogo Miyazaki Hiroyuki Yasuda Akira Sekiguchi 《Phosphorus, sulfur, and silicon and the related elements》2013,188(6):1346-1350
The reaction of trisilirene 1 with propylene sulfide or elemental sulfur produced Si3S-bicyclo[1.1.0]butane 2, which underwent Si–Si insertion of a second S atom forming Si3S2-bicyclo[1.1.1]pentane 3. Analogous reactions of 1 with elemental Se or Te resulted in the formation of heavier analogues of 2, namely, Si3Se-bicyclo[1.1.0]butane 4 and Si3Te-bicyclo[1.1.0]butane 5. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file. GRAPHICAL ABSTRACT 相似文献
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A. Hajri R. Abderrahim 《Phosphorus, sulfur, and silicon and the related elements》2013,188(3):520-525
Abstract The reaction of thionyl chloride with amidines 2, derived from N-benzimidazol-2-yl imidates 1, leads to [1,2,4,6]thiatriazino[2,3-a][1,3]benzimidazol-1(2H)-one 3 in good yields. [1,3,5]Thiadiazino[3,4-a][1,3]benzimidazol-2-imine 4 was prepared by condensation of NaSCN with benzimidazol-2-yl imidate 1. The isolated compounds 3 and 4 were identified by spectroscopic methods including IR, 1H NMR, and 13C NMR as well as elemental analyses and MS of 3d and 4b. GRAPHICAL ABSTRACT 相似文献
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Hongwei Jin Dong Jiang Jianrong Gao Genrong Qiang Yuan Gong 《Phosphorus, sulfur, and silicon and the related elements》2013,188(12):2341-2349
Abstract 3H-Benzo[1,2]-dithiole-3-thiones were prepared from potassium sulfide and 2-halobenzaldehydes in moderate-to-good yields, and a plausible mechanism for this catalyst-free intramolecular heteroannulation reaction has been proposed. The Knoevenagel condensation reactions of 3H-benzo[1,2]dithiole-3-thiones with active methylene compounds such as ethyl 2-cyanoacetate and diethyl malonate, and the three-component one-pot reactions of potassium sulfide, 2-halobenzaldehydes, and ethyl 2-cyanoacetate, affording the corresponding products, have been developed. GRAPHICAL ABSTRACT 相似文献
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Shahrukh T. Asundaria Keshav C. Patel Kalpesh M. Mehta 《Phosphorus, sulfur, and silicon and the related elements》2013,188(7):1554-1562
Abstract Novel 3-[4-(6-bromo-4-oxo-2-phenylquinazolin-3(4H)-yl)benzoyl]-2-substituted-1,3,4-thiazolium-5-thiolate 7(a–j) and 3-{4-[(6-bromo-2-phenylquinazolin-4-yl)amino] benzoyl}-2-substituted-1,3,4-thiadiazolium-5-thiolate 12(a–j) were synthesized from 6-bromo-2-phenyl-4H-3,1-benzoxazin-4-one (1). The structures of the newly synthesized compounds were confirmed by spectral data and elemental analysis. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file. GRAPHICAL ABSTRACT 相似文献
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Kanti Sharma Renuka Jain 《Phosphorus, sulfur, and silicon and the related elements》2013,188(10):2086-2095
Abstract An expeditious one-pot synthesis of a novel heterocyclic system, 3′-(2-aminobenzimidazolyl)-2-phenyl spiro[4H-benzopyran-4,2′-thiazolidin]-4-ones, has been accomplished by condensing substituted hydrazinobenzimidazole, flavanone, and mercaptoacetic acid by conventional heating in ethanol or toluene, and in an ionic liquid, viz., 1-butyl-3-methyl-imidazolium hexafluorophosphate. Excellent yields (85%–90%) and higher purity are obtained in the ionic-liquid-mediated synthesis as compared with the conventional procedure (55%–60%). Further, these compounds were acylated with trifluoroacetic anhydride. The structures of the compounds were confirmed by IR, 1H NMR, 13C NMR, mass spectral data, and elemental analysis. The compounds, upon evaluation for their antibacterial, antifungal, and insecticidal activities, exhibited excellent results. [Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements for the following free supplemental resource: Table S1, S2, and S3] GRAPHICAL ABSTRACT 相似文献
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Abdel-Aziz S. El-Ahl Fatty A. Amer Akram H. Elbeheery 《Phosphorus, sulfur, and silicon and the related elements》2013,188(11):2226-2235
Abstract Unprecedented high-yield simple and mild conversion of primary aliphatic and aromatic thioamides into 5-substituted tetrazoles on treatment with a combination of tetrachlorosilane and sodium azide in refluxing acetonitrile has been achieved. Secondary acyclic, cyclic, and heterocyclic thioamides could also be transformed in high yields into 1-substituted, 1,5-disubstituted, or annulated tetrazoles under the same reaction condition. GRAPHICAL ABSTRACT 相似文献
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Nazariy T. Pokhodylo Vasyl S. Matiychuk 《Phosphorus, sulfur, and silicon and the related elements》2013,188(9):1895-1901
Abstract 1-Aryl-1H-1,2,3-triazole-4-carbonyl chlorides were selected as starting materials for the Boulton–Katritzky rearrangement. When 3-amino-5-methylisoxazole was acylated by 1-aryl-1H-1,2,3-triazole-4-carbonyl chlorides, 1-aryl-5-methyl-N-(5-methylisoxazol-3-yl)-1H-1,2,3-triazole-4-carboxamides 5 were obtained and no further rearrangement occurred. On the other hand, when 1-aryl-1H-1,2,3-triazole-4-carbonyl chlorides were first converted into isothiocyanates by the reaction with KSCN and then were allowed to react with 3-amino-5-methylisoxazole 4 in one pot, intermediate thioureas were formed and spontaneously transformed in statu nascendi into 1,2,4-thiadiazole derivatives 6. GRAPHICAL ABSTRACT 相似文献
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Gadada Naganagowda Amorn Petsom 《Phosphorus, sulfur, and silicon and the related elements》2013,188(10):2112-2121
Abstract 3-Chloro-1-benzothiophene-2-carbonylchloride 1 was made to reacts with hydrazine hydrate afforded 3-chloro-1-benothiophene-2-carbohydrazide 2 in good yield. 5-(3-chloro-1-benzothiophen-2-yl)-1,3,4-oxadiazole-2-thiol 4 was synthesized from 3-chloro-1-benzothiophene-2-carbohydrazide 2. Mannich bases, alkyl halide, and acid chlorides derivatives were then prepared. Compound 4 on condensation with chloroacetone in the presence of NaOH as base and ethanol as solvent gave 1-{[5-(3-chloro-1-benzo[b]thiophen-2-yl)-1,3,4-oxadiazol-2-yl]sulfanyl}propan-2-on 6. Condensation of compound 6 with various aromatic aldehydes afforded a series of chalcones 7a–h. The structures of all the synthesized compounds were confirmed by spectral data and have been screened for antibacterial activity. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file. GRAPHICAL ABSTRACT 相似文献
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Nina K. Gusarova Svetlana F. Malysheva Natal’ya A. Belogorlova Alexander V. Artem’ev Vladimir A. Kuimov Boris A. Trofimov 《Phosphorus, sulfur, and silicon and the related elements》2013,188(1):98-104
Abstract Red phosphorus reacts with 4-methoxystyrene in the KOH-DMSO superbase system (130 °C, 3 h, Ar) in the presence of a small quantity of H2O to give tris[2-(4-methoxyphenyl)ethyl]phosphane oxide as the main product in 30% yield. Microwave activation of the reaction (600 W, 6 min) affords basically a mixture of the phosphane oxide and tris[2-(4-methoxyphenyl)ethyl]phosphane (in a ratio of 1:1). When the mixture is exposed to air (r.t., 24 h), the phosphane oxide is formed in 85% yield. GRAPHICAL ABSTRACT 相似文献
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