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7,119 Newest Publications about the topic condensation

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Synthesis monitoring of SBA-15 nanostructured materials

17-Apr-2009 | Antonio S. Araujo, Solange A. Quintella, Ana Carla S. L. S. Coutinho, Adsorption, 2009

The SBA-15 materials were synthesized by the hydrothermal method using tetraethyl orthosilicate as silica source and P123 as template agent. The synthesis process was accomplished varying the time during the hydrothermal processing. For the synthesis monitoring, a small amount of sample was ...

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Synthesis, structure and adsorption properties of nanoporous SBA-15 materials with framework and surface functionalities

10-Apr-2009 | M. Barczak, S. Pikus, Barbara Skrzydło-Radomańska, A. Dąbrowski, Adsorption, 2009

Highly ordered SBA-15 nanoporous silica containing ethylene, phenylene bridges or/and amine, thiol, vinyl and phenyl surface groups were synthesized by using amphiphilic block copolymer as the structure-directing agent. The XRD data shows high degree of the order of the final structures. Obtained ...

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Molbank, Vol. 2009, Pages M595: Synthesis of 1-[(2-Oxonaphthalen-1(2H)-ylidene)methyl]urea

18-Mar-2009 | Xu, Jiehua ; Chen, Anjun ; Liu, Qingjian, Molbank, 2009

An unexpected product, 1-[(2-oxonaphthalen-1(2H)-ylidene)methyl]urea 4 of the condensation reaction of 2-hydroxy-1-naphthaldehyde with or without ethyl benzoylacetate and urea under hydrochloric acid-catalyzed and solvent-free conditions is reported.

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Preparation and Catalytic Properties of a Ru(II) Coordinated Polyimide Supported by a Ligand Containing Terpyridine Units

12-Mar-2009 | Turgay Seckin, Ismail Özdemir, Süleyman Köytepe, Nevin Gürbüz, Journal of Inorganic and Organometallic Polymers and Materials, 2009

The synthesis of terpyridine-based polyimide catalysis for hydrosilylation reaction is outlined in this work. 5,5′′-Bis(bromomethyl)-2,2′:6′,2′′-terpyridine was polymerized with the corresponding diimide derivatives of dianhyrides to give polyimides utilizing the terpyridine unit in the main ...

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Synthesis, Characterization and Catalytic Activity of Sn-SBA-15 Mesoporous Molecular Sieves

26-Nov-2008 | Veda Ramaswamy, Pallavi Shah, Karoly Lazar, A. V. Ramaswamy, Catalysis Surveys from Asia, 2008

Our recent reports on the synthesis of Sn-incorporated mesoporous SBA-15 materials have been reviewed. The preparation of the samples with different Si/Sn ratios followed two procedures, the first is the post-synthesis modification of SBA-15 by impregnation with Sn chloride or acetate, and the ...

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Solvolysis–hydrolysis of N-bearing alkoxysilanes: Reactions studied with 29Si NMR

05-Jul-2008 | Marie-Christine Brochier Salon, Michel Bardet, Mohamed Naceur Belgacem, Silicon Chemistry, 2008

The hydrolysis reactions of 8 different N-bearing alkoxy-silane coupling agents, namely: 3-cyanopropyl triethoxy silane (CPES), triethoxy-3-(2-imidazolin-1-yl) propyl silane (IZPES), and amino silanes, 3-aminopropyl triethoxy silane (APES), 3-aminopropyl trimethoxy silane (APMS), ...

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5‐Bromo‐N′‐(2‐hydroxybenzylidene)nicotinohydrazide

01-Dec-2007 | ; Chun‐Bao Tang, Acta Crystallographica Section E, 2007

The title Schiff base compound, C13H10BrN3O2, was derived from the condensation reaction of salicylaldehyde with 5‐bromonicotinohydrazide. The dihedral angle between the benzene ring and the pyridine ring is 13.2 (4)°. In the crystal structure, molecules are linked through N—H...O and C—H...O ...

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{2,6‐Bis[1‐(phenylimino)ethyl]pyridine}dichloridomanganese(II) dichloromethane hemisolvate

01-Dec-2007 | ; Meng‐Ping Guo; Gui‐Quan Guo; Hui‐Rui Guo; Di‐Chang Zhong; Wei‐Qiang Zhou, Acta Crystallographica Section E, 2007

The title complex, [MnCl2(C21H19N3)]·0.5CH2Cl2 or [MnCl2(Plep)]·0.5CH2Cl2 {Plep is 2,6‐bis[1‐(phenylimino)ethyl]pyridine, derived from the condensation of 2,6‐diacetylpyridine and aniline in methanol} is composed of two crystallographically independent [MnCl2(Plep)] neutral units and a CH2Cl2 ...

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4‐(4‐Chlorophenyl)‐3‐phenyl‐5‐(4‐pyridyl)‐4H‐1,2,4‐triazole

01-Dec-2007 | ; Jing Hu; Guochun Ma; Guofeng Chen; Wenqin Zhang, Acta Crystallographica Section E, 2007

The title compound, C19H13ClN4, was synthesized by the condensation of isonicotinohydrazide and N‐(4‐clorophenyl)benzimidoyl chloride in N,N‐dimethylacetamide. In the title molecule, the triazole ring is oriented at dihedral angles of 34.64 (2), 30.97 (3) and 71.82 (3)° with respect to the ...

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3‐(3‐Methoxyphenyl)‐5‐[(5‐methyl‐1,3,4‐thiadiazol‐2‐yl)sulfanylmethyl]‐1,2,4‐oxadiazole

01-Dec-2007 | ; Pin‐liang Wang; Hai‐shu Zeng; Hai‐ling Li; Si‐shun Kang; Hai‐bo Wang, Acta Crystallographica Section E, 2007

The title compound, C13H12N4O2S2, was synthesized via condensation of 5‐chloromethyl‐3‐(3‐methoxyphenyl)‐1,2,4‐oxadiazole with (5‐methyl‐1,3,4‐thiadiazol‐2‐yl)methanethiol. The benzene and oxadiazole rings are coplanar due to the extended aromatic system. The angle between this plane and the ...

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